John Leffingwell resumes & CV records
Resumes
John David Leffingwell, 3314807 Elmont Dr, Houston, TX 77095
John Leffingwell Phones & Addresses
Houston, TX
Spring, TX
1916 Branard St, Houston, TX 77098
Social networks
John David Leffingwell
Linkedin
Mentions for John David Leffingwell
Publications & IP owners
Us Patents
Liquid Composition Of 2-Isopropyl-N,2,3-Trimethylbutyramide And N-Ethyl-P-Menthane-3-Carboxamide, Its Preparation Method And Its Applications As A Cooling Agent And Flavor Enhancer
US Patent:
2007004, Mar 1, 2007
Filed:
Sep 1, 2005
Appl. No.:
11/217188
Inventors:
Ashok Moza - Baytown TX, US
Hong Sun - Baytown TX, US
John Leffingwell - Baytown TX, US
Diane Leffingwell - Baytown TX, US
Stephen Rohde - Baytown TX, US
Hong Sun - Baytown TX, US
John Leffingwell - Baytown TX, US
Diane Leffingwell - Baytown TX, US
Stephen Rohde - Baytown TX, US
International Classification:
A23L 1/22
US Classification:
426534000
Abstract:
Disclosed is a liquid composition containing N-Ethyl-p-menthane-3-carboxamide and 2-Isopropyl-N,2,3-trimethylbutyramide (popularly known as WS-3 and WS-23 respectively), its preparation and its applications as a cooling sensate and as a flavoring agent. The present invention provides a composition characterized in that it comprises N-Ethyl-p-menthane-3-carboxamide and 2-Isopropyl-N,2,3-trimethylbutyramide in a ratio by weight in the range of 60/40 to 30/70 with the corresponding crystallization point being below 15 C. Preferably a weight ratio of 52/48 to 42/58 is employed corresponding to a crystallization point below −20 C. Such compositions have the advantages of being liquid at room temperature, easy to use as a cooling agent or a flavoring agent with no need to melt the normally crystalline forms of 2-Isopropyl-N,2,3-trimethylbutyramide (melting point 62 C.) and N-Ethyl-p-menthane-3-carboxamide (melting point 98.7 C.). The liquid cooling compositions herein described not only saves handling time, but also simplifies manufacturing processes by eliminating the need for extensive dust control procedures and can be used in cold processes at room temperature. These liquid compositions are effective not just as cooling agents, but at low levels act as flavor and salt enhancers.
Cooling Agents As Flavor And Saltiness Enhancers
US Patent:
2007005, Mar 15, 2007
Filed:
Sep 15, 2005
Appl. No.:
11/226597
Inventors:
Ashok Moza - Baytown TX, US
Stephen Rohde - Baytown TX, US
John Leffingwell - Baytown TX, US
Diane Leffingwell - Baytown TX, US
Stephen Rohde - Baytown TX, US
John Leffingwell - Baytown TX, US
Diane Leffingwell - Baytown TX, US
International Classification:
A23L 1/226
US Classification:
426537000
Abstract:
Described is the use of the cooling agents N-Ethyl-p-menthane-3-carboxamide and 2-Isopropyl-N,2,3-trimethylbutyramide (popularly known as WS-3 and WS-23 respectively) and mixtures thereof as flavor and saltiness enhancers wherein the cooling properties are imperceptible or barely perceptible.
Use Of A Liquid Cooling Sensate To Provide A Pungent, Warming Or Tingling Sensate Composition
US Patent:
2008003, Feb 14, 2008
Filed:
Aug 2, 2006
Appl. No.:
11/497479
Inventors:
Ashok K Moza - Baytown TX, US
Stephen E. Rohde - Baytown TX, US
John Charles Leffingwell - Baytown TX, US
Diane Leffingwell - Baytown TX, US
Stephen E. Rohde - Baytown TX, US
John Charles Leffingwell - Baytown TX, US
Diane Leffingwell - Baytown TX, US
International Classification:
A61K 36/81
A61K 36/31
A61K 31/21
A61K 31/26
A61K 31/165
A61K 36/31
A61K 31/21
A61K 31/26
A61K 31/165
US Classification:
424755, 514514, 424769, 424760, 424773, 514617
Abstract:
The present invention is directed to a sensate composition consisting of a liquid cooling composition, and at least one warming, tingling, or pungent sensate ingredient of either synthetic or natural origin which provides enhanced warming, tingling, or pungent properties. The liquid cooling sensate of the invention is a eutectic mixture of 2-Isopropyl-N,2,3-trimethylbutyramide and N-Ethyl-p-menthane-3-carboxamide, or at least one cooling agent selected from the group consisting of N-(2-hydroxyethyl)-2,3-dimethyl-2-isopropylbutanamide, N-(3-ethoxypropyl)-2,3-dimethyl-2-isopropylbutanamide, N-(3-isopropoxypropyl)-2,3-dimethyl-2-isopropylbutanamide, N-(3-butoxypropyl)-2,3-dimethyl-2-isopropylbutanamide,N-Ethyl-2,2-diisopropylbutanamide, N-(1,1-dimethyl-2-hydroxyethyl)-2,2-diethylbutanamide, N-(2-ethoxyethyl)-2,3-dimethyl-2-isopropylbutanamide and N-(3-methoxypropyl)-2,3-dimethyl-2-isopropylbutanamide. The warming, tingling, or pungent sensate of the invention consists of at least one component that is an isothiocyanate and/or an amide or a natural product that contains at least one warming, tingling, or pungent principle that is an isothiocyanate and/or an amide. The present invention is further directed to a method of using the sensate composition in a food, pharmaceutical or personal care product.
Cooling Compositions
US Patent:
2008029, Nov 27, 2008
Filed:
May 21, 2007
Appl. No.:
11/804760
Inventors:
Ashok K. Moza - Baytown TX, US
Hong Sun - Baytown TX, US
Stephen Rohde - Baytown TX, US
Diane Leffingwell - Baytown TX, US
John Charles Leffingwell - Baytown TX, US
Hong Sun - Baytown TX, US
Stephen Rohde - Baytown TX, US
Diane Leffingwell - Baytown TX, US
John Charles Leffingwell - Baytown TX, US
International Classification:
A61K 31/16
A23G 4/08
A23L 1/48
A23G 4/08
A23L 1/48
US Classification:
514629, 426 3, 426660
Abstract:
Disclosed are improved cooling compositions comprised of N-(2-hydroxyethyl)-2,3-dimethyl-2-isopropylbutyramide and at least one other cooling agent. The cooling compositions may be used alone or in products such as a chewing gum or a confection.
NOTICE: You may not use BackgroundCheck or the information it provides to make decisions about employment, credit, housing or any other purpose that would require Fair Credit Reporting Act (FCRA) compliance. BackgroundCheck is not a Consumer Reporting Agency (CRA) as defined by the FCRA and does not provide consumer reports.