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Kristoffer John Donhowe, 42936 Madison Dr, Mountain View, CA 94040

Known as:
Kristoffer J Donhowe Kristoffer Te Donhowe John Donhowe Kristoffer

Kristoffer Donhowe Phones & Addresses

936 Madison Dr, Mountain View, CA 94040    650-2485592   

Sunnyvale, CA   

Stanford, CA   

Snoqualmie, WA   

Kirkland, WA   

Schenectady, NY   

Alviso, CA   

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Kristoffer John Donhowe

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Work

Company: Nest Sep 2016 Position: Staff artificial intelligence and control engineer

Education

Degree: Master of Science, Masters School / High School: Stanford University 2004 to 2005 Specialities: Mechanical Engineering

Skills

Control System Design • Firmware • Mechatronics • System Modeling • Physical Modeling • Simulink • Labview • Matlab • Sensors • C • Systems Modeling • Control Systems Design • C++

Languages

English • German

Ranks

Certificate: Machine Learning

Industries

Consumer Electronics
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Resumes

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Staff Artificial Intelligence And Control Engineer

Location:
936 Madison Dr, Mountain View, CA 94040
Industry:
Consumer Electronics
Work:
Nest
Staff Artificial Intelligence and Control Engineer Nest Oct 2014 - Aug 2016
Staff Embedded Algorithm Software Engineer Tesla Aug 2011 - Oct 2014
Staff Firmware Engineer Tesla Jul 2010 - Aug 2011
Senior Firmware Engineer Sc Solutions May 2005 - Jul 2010
Research Engineer Siemens Jun 2003 - Sep 2003
Summer Intern
Education:
Stanford University 2004 - 2005
Master of Science, Masters, Mechanical Engineering Stanford University 2000 - 2004
Bachelors, Bachelor of Science, Electrical Engineering
Skills:
Control System Design, Firmware, Mechatronics, System Modeling, Physical Modeling, Simulink, Labview, Matlab, Sensors, C, Systems Modeling, Control Systems Design, C++
Languages:
English
German
Certifications:
Machine Learning
Coursera

Publications & IP owners

Us Patents

Method Of Operating A Multiport Vehicle Charging System

US Patent:
8643330, Feb 4, 2014
Filed:
Sep 2, 2011
Appl. No.:
13/224506
Inventors:
Troy Adam Nergaard - San Francisco CA, US
Martin Sukup - San Francisco CA, US
Kristoffer John Donhowe - Sunnyvale CA, US
Christopher Hugo Van Dyke - San Francisco CA, US
Warwick Ka Kui Wong - Palo Alto CA, US
Assignee:
Tesla Motors, Inc. - Palo Alto CA
International Classification:
H01M 10/44
US Classification:
320109
Abstract:
A method of distributing charging power among a plurality of charge ports of a battery charging station is provided, where the battery charging station includes a plurality of power stages where each power stage includes an AC to DC converter and provides a portion of the charging station's maximum available charging power, the method comprising the steps of (i) monitoring battery charging station conditions and operating conditions for each charging port; (ii) determining current battery charging station conditions, including current operating conditions for each charging port; (iii) determining power distribution for the battery charging station and the charging ports in response to the current battery charging conditions and in accordance with a predefined set of power distribution rules; and (iv) coupling the power stages to the charging ports in accordance with the power distribution.

Multiport Vehicle Dc Charging System With Variable Power Distribution

US Patent:
2013005, Mar 7, 2013
Filed:
Sep 2, 2011
Appl. No.:
13/224368
Inventors:
Troy Adam Nergaard - San Francisco CA, US
Martin Sukup - San Francisco CA, US
Kristoffer John Donhowe - Sunnyvale CA, US
Christopher Hugo Van Dyke - San Francisco CA, US
Warwick Ka Kui Wong - Palo Alto CA, US
Assignee:
TESLA MOTORS, INC. - Palo Alto CA
International Classification:
H02J 7/00
US Classification:
320109
Abstract:
A battery charging station is provided that includes a plurality of charge ports, a plurality of power stages where each power stage includes an AC to DC converter and where each power stage provides a portion of the charging station's maximum available charging power, a switching system that is used to couple the output of the power stages to the charging ports, a system monitor that determines current charging station and vehicle conditions, and a controller that controls operation of the switching system in accordance with a predefined set of power distribution rules and on the basis of the current charging station and vehicle conditions. Current charging station and vehicle conditions may include vehicle arrival time, usage fees, vehicle and/or customer priority information, battery pack SOC, and/or intended departure time.

Method And System For Steerable Medical Device Path Definition And Following During Insertion And Retraction

US Patent:
2014003, Jan 30, 2014
Filed:
Oct 1, 2013
Appl. No.:
14/042876
Inventors:
Amir Belson - Los Altos CA, US
Kristoffer J. Donhowe - Sunnyvale CA, US
Kenneth R. Krieg - Fremont CA, US
Eric M. Storne - Menlo Park CA, US
Thomas J. Yorkey - San Ramon CA, US
Jun Zhang - Union City CA, US
Assignee:
Intuitive Surgical Operations, Inc. - Sunnyvale CA
International Classification:
A61B 1/005
US Classification:
600141
Abstract:
Waypoints for a steerable medical device are stored as the steerable medical device is moved within a patient. The stored waypoints are an ordered sequence of locations. The ordered sequence of locations defines a safe path within the patient for moving an articulatable portion of the steerable medical device. The articulatable portion of the steerable medical device is constrained to follow the safe path as the articulatable portion moves within the patient. For example, the articulatable portion of the steerable medical device is constrained to remain within a boundary region enclosing the safe path as the articulatable portion of the steerable medical device follows the safe path.

Method And System For Steerable Medical Device Path Definition And Following During Insertion And Retraction

US Patent:
8568302, Oct 29, 2013
Filed:
Nov 6, 2009
Appl. No.:
12/613768
Inventors:
Caitlin Quance Donhowe - Sunnyvale CA, US
Amir Belson - Los Altos CA, US
Kristoffer John Donhowe - Sunnyvale CA, US
Kenneth Robert Krieg - Fremont CA, US
Eric Michael Storne - Menlo Park CA, US
Thomas J. Yorkey - San Ramon CA, US
Jun Zhang - Union City CA, US
Assignee:
Intuitive Surgical Operations, Inc. - Sunnyvale CA
International Classification:
A61B 1/00
A61B 1/04
US Classification:
600145, 600118
Abstract:
Waypoints for a steerable medical device are stored as the steerable medical device is moved within a patient. The stored waypoints are an ordered sequence of locations. The ordered sequence of locations defines a safe path within the patient for moving an articulatable portion of the steerable medical device. The articulatable portion of the steerable medical device is constrained to follow the safe path as the articulatable portion moves within the patient. For example, the articulatable portion of the steerable medical device is constrained to remain within a boundary region enclosing the safe path as the articulatable portion of the steerable medical device follows the safe path.

Managing Emissions Demand Response Event Generation

US Patent:
2022040, Dec 22, 2022
Filed:
Jun 17, 2021
Appl. No.:
17/350787
Inventors:
- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US
Assignee:
Google LLC - Mountain View CA
International Classification:
F24F 11/47
F24F 11/58
F24F 11/62
Abstract:
Techniques for performing an emissions demand response event are described. In an example, a cloud-based HVAC control server system receives an emissions rate forecast for a predefined future time period. Using the emissions rate forecast, a plurality of emissions differential values are created for a plurality of points in time during the predefined future time period. The emissions differential values represent a change in predicted emissions over time. Based on the plurality of emissions differential values and a predefined maximum number of emissions demand response events, an emissions demand response event is generated during the predefined future time period. The cloud-based HVAC control server system then causes a thermostat to control an HVAC system in accordance with the generated emissions demand response event.

Dynamic Adaptation Of Emissions Demand Response Events

US Patent:
2022040, Dec 22, 2022
Filed:
Jun 17, 2021
Appl. No.:
17/350793
Inventors:
- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US
Assignee:
Google LLC - Mountain View CA
International Classification:
F24F 11/47
F24F 11/58
F24F 11/62
Abstract:
Techniques for performing an emissions demand response (EDR) event are described. In an example, a cloud-based HVAC control system may obtain a first emissions rate forecast and generate an EDR event with a start time and end time based on the first emissions rate forecast. The EDR event may then be transmitted to a thermostat and stored in a memory of the thermostat. At the start time, the thermostat may commence controlling an HVAC system according to the EDR event. After the start time and prior to the end time, the cloud-based HVAC control system may obtain a second emissions rate forecast and generate a modified EDR event with a modified end time. The modified EDR event may be transmitted to the thermostat before the end time and/or the modified end time whereupon the thermostat may control the HVAC system accordingly until the modified end time is reached.

Managing User Account Participation In Emissions Demand Response Events

US Patent:
2022040, Dec 22, 2022
Filed:
Jun 17, 2021
Appl. No.:
17/350801
Inventors:
- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US
Assignee:
Google LLC - Mountain View CA
International Classification:
F24F 11/47
F24F 11/58
F24F 11/63
Abstract:
Techniques for performing an emissions demand response event are described. In an example, a cloud-based HVAC control server system obtains a history of emissions rates. Based on the history of emissions rates, a future time period of predicted high emissions is identified. An emission demand response event participation level of an account mapped to a thermostat is determined for the future time period of predicted high emissions. The emissions demand response event participation level may be one of a plurality of emissions demand response event participation levels. based on the emissions demand response event participation level of the account, an emissions demand response event is generated during the future time period of predicted high emissions. The cloud-based HVAC control server system then causes a thermostat to control an HVAC system in accordance with the generated emissions demand response event.

Managing Emissions Demand Response Event Intensity

US Patent:
2022040, Dec 22, 2022
Filed:
Jun 17, 2021
Appl. No.:
17/350808
Inventors:
- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US
Assignee:
Google LLC - Mountain View CA
International Classification:
F24F 11/47
F24F 11/58
F24F 11/63
Abstract:
Techniques for performing an emissions demand response event are described. In an example, a cloud-based HVAC control server system obtains an emissions rate forecast for a predefined future time period. Using the emissions rate forecast, a future emissions rate event during the predefined future time period is identified. The future emissions rate event comprises an indication of predicted magnitude and a time period when a predicted emissions rate will be at an increased or decreased level. A confidence value indicating a certainty of the future emissions rate event occurring as predicted is determined. Based on the identified future emissions rate event and the confidence value, an emissions demand response event having a start time and an end time during the future emissions rate event is generated. The cloud-based HVAC control server system then causes a thermostat to control an HVAC system in accordance with the generated emissions demand response event.

Possible Relatives

Vicki I Donhowe  Kristoffer L Johnson  Kristoffer R Jones  Kristoffer A Kirkpatrick  Kristoffer M Larson  Kristoffer H Mize  Kristoffer L Tinney  Kristoffer W Smith  Kristoffer Spear  Kristoffer P Wolfram 

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