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Donald T Valentine DeceasedSan Rafael, CA

Known as:
Donald Thomas Valentine Donald Tr The Valentine Rachel T Valentine Donald Valentine Trus Donal Valentine Don T Valentine Dona L Valentine

Donald Valentine Phones & Addresses

Kentfield, CA   

Woodside, CA   

733 Lord Byron Trl, Hamilton, MT 59840    406-3759595   

Walnut Creek, CA   

9745 E Bajada Rd, Scottsdale, AZ 85262    480-5132326   

Menlo Park, CA   

Phoenix, AZ   

Ravalli, MT   

Work

Company: Sequoia capital Address: 3000 Sand Hill Rd 4-180, Menlo Park, CA 94025 Phones: 650-8543927 Position: Founding partner/board member Industries: Investors
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Mentions for Donald T Valentine

Career records & work history

Lawyers & Attorneys

Donald Valentine Photo 1

Donald Valentine - Lawyer

Office:
Barristers Chambers 1 Atkin Building Anthony Butcher, Q.C.
ISLN:
901074223
Admitted:
1956
University:
M.A., LL.B.

Donald Valentine resumes & CV records

Resumes

Donald Valentine Photo 36

Teacher

Work:

Teacher
Donald Valentine Photo 37

Donald Valentine

Donald Valentine Photo 38

Partner At Sequoia Capital

Location:
San Francisco Bay Area
Industry:
Investment Management

Publications & IP owners

Us Patents

Process For The Preparation Of Urethanes

US Patent:
4600793, Jul 15, 1986
Filed:
Sep 16, 1983
Appl. No.:
6/532784
Inventors:
John H. Grate - Palo Alto CA
David R. Hamm - Mountain View CA
Donald H. Valentine - Santa Clara CA
Assignee:
Catalytica Associates - Mountain View CA
Haldor Topsoe A/S - Copenhagen
International Classification:
C07C125065
C07C125073
C07C125077
US Classification:
560 25
Abstract:
A process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a halide-free ruthenium catalyst is disclosed. In the process of this invention, the rate of conversion and selectivity to urethane is increased by providing a primary amine in the reaction solution.

Carbonylation Process

US Patent:
4705883, Nov 10, 1987
Filed:
Jan 24, 1986
Appl. No.:
6/820850
Inventors:
John H. Grate - Mountain View CA
David R. Hamm - Mountain View CA
Donald H. Valentine - Ridgefield CT
Assignee:
Catalytica Associates - Mountain View CA
Haldor Topsoe - Copenhagen
International Classification:
C07C125065
C07C125073
US Classification:
560 25
Abstract:
The invention providess a process for carbonylating a nitrogen-containing organic compound, selected from the group consisting of nitro, nitroso, azo, and azoxy compounds, by reacting said nitrogen-containing organic compound, with carbon monoxide, wherein the improvement comprises the step of: (a) reacting said nitrogen-containing compound with carbon monoxide, in the presence of a primary amine and a catalyst, essentially free of redox active metal components selected from the group consisting of rhodium and ruthenium.

Process For The Preparation Of Urethanes

US Patent:
4603216, Jul 29, 1986
Filed:
Sep 16, 1983
Appl. No.:
6/532785
Inventors:
John H. Grate - Palo Alto CA
David R. Hamm - Mountain View CA
Donald H. Valentine - Santa Clara CA
Assignee:
Catalytica Associates - Mountain View CA
Haldor Topsoe A/S - Copenhagen
International Classification:
C07C125065
C07C125073
C07C125067
C07C125075
US Classification:
560 24
Abstract:
This invention relates to a process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a ruthenium catalyst comprising a bis phosphine ligand.

Process For Preparation Of Urethanes

US Patent:
4629804, Dec 16, 1986
Filed:
Mar 4, 1985
Appl. No.:
6/707885
Inventors:
John H. Grate - Mountain View CA
David R. Hamm - Mountain View CA
Donald H. Valentine - Ridgefield CT
Assignee:
Catalytica Associates - Mountain View CA
International Classification:
C07C125065
C07C125073
C07C125077
US Classification:
560 24
Abstract:
This invention relates to a process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a ruthenium catalyst. The selectivity of this process is increased by the use of methanol instead of various other alkanols, e. g. ethanol. Preferably the catalyst is a halide-free ruthenium catalyst, e. g. a ruthenium carbonyl complex.

Possible Relatives

David E Valentine  Dawn H Valentine  Dawna Valentine  Dean B Valentine  Deanna L Valentine  Dale C Valentine  Dallas H Valentine  Donald R Johnson  Donald Stamps  Donald L Stanchfield 

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