Patents by Inventor Robert W. Trenkle

Robert W. Trenkle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4462880
    Abstract: Described is a process for imparting an "air dried cloth" aroma to cloth, synthetic or natural, previously dried using a clothes drier, comprising the step of contacting the cloth prior to drying with an aroma augmenting or enhancing quantity of either (i) a mixture consisting essentially of:(a) from about 0.5 up to about 5% by weight of said composition of n-hexanal;(b) from about 2 up to about 12% by weight of said composition of n-heptanal;(c) from about 5 up to about 15% by weight of said composition of n-octanal;(d) from about 40 up to about 70% by weight of said composition of n-nonanal;(e) from about 10 up to about 30% by weight of said composition of n-decanal;(f) from about 0.5 up to about 5% by weight of said composition of n-undecanal;(g) from about 0.5 up to about 5% by weight of said composition of n-dodecanal;(h) from about 0.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: July 31, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ira D. Hill, Robert W. Trenkle, Braja D. Mookherjee, Robin K. Wolff
  • Patent number: 4446651
    Abstract: Described is a method of chemically increasing the amount of extractable cedarwood oil from Juniperus Mexicana (commonly known as "Texas cedarwood") by treating standing living Juniperus Mexicana with a solution comprising a bipyridylium salt and permitting said trees to continue to grow in their natural environment for a period of time of at least two months. Portions of the trees are then cut and the cedarwood oil is extracted therefrom using unit operations including, but not limited to, steam distillation, in relatively large yields.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: May 8, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Seymour J. Spitz, Jr., Braja D. Mookherjee, Ira D. Hill, Lloyd F. Keleher, Robert W. Trenkle, Robin K. Wolff
  • Patent number: 4446125
    Abstract: Described are isomeric mixtures of farnesene prepared by dehydrating nerolidol using potassium bisulfate or paratoluene sulfonic acid and then distilling the resultant product at particular temperature ranges and particular pressure ranges in order to prepare a composition of matter useful for augmenting or enhancing the fresh green, herbaceous aroma and taste nuances of foodstuffs, chewing gums, medicinal products and toothpastes.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: May 1, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Bernard J. Chant, Anton V. Ouwerkerk, Venkatesh Kamath, Cynthia J. Mussinan
  • Patent number: 4434086
    Abstract: Described is a process for imparting an "air dried cloth" aroma to cloth, synthetic or natural, previously dried using a clothes drier, comprising the step of contacting the cloth prior to drying with an aroma augmenting or enhancing quantity of either (i) a mixture consisting essentially of:(a) from about 0.5 up to about 5% by weight of said composition of n-hexanal;(b) from about 2 up to about 12% by weight of said composition of n-heptanal;(c) from about 5 up to about 15% by weight of said composition of n-octanal;(d) from about 40 up to about 70% by weight of said composition of n-nonanal;(e) from about 10 up to about 30% by weight of said composition of n-decanal;(f) from about 0.5 up to about 5% by weight of said composition of n-undecanal;(g) from about 0.5 up to about 5% by weight of said composition of n-dodecanal;(h) from about 0.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: February 28, 1984
    Assignee: International Flavors & Fragrances, Inc.
    Inventors: Ira D. Hill, Robert W. Trenkle, Braja D. Mookherjee, Robin K. Wolff
  • Patent number: 4428387
    Abstract: Described is the use for augmenting or enhancing the aroma or taste of smoking tobaccos and smoking tobacco articles of methyl substituted pinyl oxopentenes and mixtures of same defined according to the structure: ##STR1## wherein Z represents methylidene defined according to the structure: ##STR2## ethylidene defined according to the structure: ##STR3## or ethylenyl defined according to the structure: ##STR4## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents no bond; wherein n is 0 or 1, and m is 0 or 1 with the sum of n+ m being equal to 1; wherein X represents carbinol having the structure: ##STR5## or ketone having the structure: ##STR6## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: January 31, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Robin K. Wolff, Richard M. Boden, Takao Yoshida
  • Patent number: 4425365
    Abstract: Described is a method for augmenting or enhancing the aroma or taste of a raspberry flavored foodstuff or chewing gum comprising the step of intimately admixing with said foodstuff or chewing gum from 0.02 parts per million up to about 300 parts per million based on total composition of a mixture of compounds prepared according to the process consisting essentially of the steps of:1. reacting alpha pinene with an equimolar mixture of carbon monoxide and hydrogen at a pressure of 4,000 psig and a temperature in the range of 200.degree.-220.degree. C. whereby a mixture of aldehydes is formed;2. distilling the mixture of aldehydes at a vapor temperature in the range of from 85.degree. C. up to 93.degree. C. and a pressure of from 3 mm/Hg. up to 4 mm/Hg., thereby recovering a mixture of aldehydes;3. reacting the resulting mixture of aldehydes with methyl ethyl ketone at a temperature of about 45.degree. C. thereby forming a mixture of ketones; and4.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: January 10, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Robin K. Wolff, Richard M. Boden, Takao Yoshida
  • Patent number: 4424378
    Abstract: Described are methyl substituted pinyl oxopentenes and mixtures of same and uses thereof in augmenting or enhancing the aroma or taste of consumable materials including foodstuffs, chewing gums, toothpastes, medicinal products, chewing tobaccos, perfume compositions, perfumed articles (including perfumed polymers, solid or liquid cationic, anionic, nonionic or zwitterionic detergents, fabric softener compositions, fabric softener articles, optical brightener compositions, and cosmetic powders), colognes, smoking tobacco compositions and smoking tobacco articles including cigars, cigarettes and integrated and separated filters therefor.
    Type: Grant
    Filed: July 8, 1982
    Date of Patent: January 3, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Robin K. Wolff, Richard M. Boden, Takao Yoshida
  • Patent number: 4391717
    Abstract: Described are isomeric mixtures of farnesene prepared by dehydrating nerolidol using potassium bisulfate or paratoluene sulfonic acid and then distilling the resultant product at particular temperature ranges and particular pressure ranges in order to prepare a composition of matter useful for augmenting or enhancing waxy, white-flowery (magnolia-like, tuberose, gardenia-like) aromas with citrusy (lemon/lime), pettitgrain-like undertones and green top notes in perfume compositions, colognes and perfumed articles (e.g., solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softener compositions, dryer-added fabric softener articles, cosmetic powders and the like).
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: July 5, 1983
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Bernard J. Chant, Anton V. Ouwerkerk, Venkatesh Kamath, Cynthia J. Mussinan
  • Patent number: 4390444
    Abstract: Described are isomeric mixtures of farnesene prepared by dehydrating nerolidol using potassium bisulfate or paratoluene sulfonic acid and then distilling the resultant product at particular temperature ranges and particular pressure ranges in order to prepare a composition of matter useful for augmenting or enhancing waxy, white-flowery (magnolia-like, tuberose, gardenia-like) aromas with citrusy (lemon/lime), pettitgrain-like undertones and green top notes in perfume compositions, colognes and perfumed articles (e.g., solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softener compositions, dryer-added fabric softener articles, cosmetic powders and the like).
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: June 28, 1983
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Bernard J. Chant, Anton V. Ouwerkerk, Venkatesh Kamath, Cynthia J. Mussinan
  • Patent number: 4376068
    Abstract: Described are isomeric mixtures of farnesene prepared by dehydrating nerolidol using potassium bisulfate or paratoluene sulfonic acid and then distilling the resultant product at particular temperature ranges and particular pressure ranges in order to prepare a composition of matter useful for augmenting or enhancing waxy, white-flowery (magnolia-like, tuberose, gardenia-like) aromas with citrusy (lemon/lime), pettitgrain-like undertones and green top notes in perfume compositions, colognes and perfumed articles (e.g., solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softener compositions, dryer-added fabric softener articles, cosmetic powders and the like).
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: March 8, 1983
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Bernard J. Chant, Anton van Ouwerkerk, Venkatesh Kamath, Cynthia J. Mussinan
  • Patent number: 4360032
    Abstract: Described is the use of augmenting or enhancing the aroma or taste of smoking tobacco or smoking tobacco articles comprising the step of intimately admixing with smoking tobacco or a portion of a smoking tobacco article at least one substance selected from the group consisting of:(i) the compound having the structure: ##STR1## (ii) the compound having the structure: ##STR2## (iii) a mixture of compounds having the structures: ##STR3## (iv) a mixture of compounds having the structures: ##STR4##
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: November 23, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, Frederick L. Schmitt, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4334098
    Abstract: Described is the compound trans, trans-.DELTA.-damascone and mixtures of trans, trans-.DELTA.-damascone and its isomer, cis, trans-.DELTA.-damascone is in a major proportion, a process for preparing same and processes for adding such trans, trans-.DELTA.-damascone or such mixtures containing high proportions of trans, trans-.DELTA.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: June 8, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja D. Mookherjee, Robert W. Trenkle, Richard A. Wilson, Frederick L. Schmitt, Manfred H. Vock, Edward J. Granda, Joaquin Vinals, Jacob Kiwala, William L. Schreiber
  • Patent number: 4324704
    Abstract: Described is a process for preparing hydrogenated derivatives of 2,6,6-trimethyl cyclohexene derivatives by means of treating said derivatives with hydrogen in the presence of a supported palladium catalyst such as palladium-on-calcium carbonate or palladium-on-barium sulfate in the presence of a quinoline activator. The resulting products are useful for their organoleptic properties as foodstuff flavorants and flavor enhancers, perfume composition ingredients, perfumed article ingredients and tobacco flavorants and flavor enhancers.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: April 13, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, Frederick L. Schmitt, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4315953
    Abstract: Described is a process for augmenting or enhancing the aroma or taste of raspberry flavored foodstuffs comprising the step of adding to a foodstuff, an aroma augmenting or enhancing quantity of certain 2,6,6-trimethylcyclohexene derivatives.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: February 16, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, Frederick L. Schmitt, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4313842
    Abstract: Described is a process for preparing hydrogenated derivatives of 2,6,6-trimethyl cyclohexene derivatives by means of treating said derivatives with hydrogen in the presence of a supported palladium catalyst such as palladium-on-calcium carbonate or palladium-on-barium sulfate in the presence of a quinoline activator. The resulting products are useful for their organoleptic properties as foodstuff flavorants and flavor enhancers, perfume composition ingredients, perfumed article ingredients and tobacco flavorants and flavor enhancers.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: February 2, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, Frederick L. Schmitt, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4311754
    Abstract: Described is a process for preparing hydrogenated derivatives of 2,6,6-trimethyl cyclohexene derivatives by means of treating said derivatives with hydrogen in the presence of a supported palladium catalyst such as palladium-on-calcium carbonate or palladium-on-barium sulfate in the presence of a quinoline activator. The resulting products are useful for their organoleptic properties as foodstuff flavorants and flavor enhancers, perfume composition ingredients, perfumed article ingredients and tobacco flavorants and flavor enhancers.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: January 19, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, Frederick L. Schmitt, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4292447
    Abstract: Described is a process for preparing hydrogenated derivatives of 2,6,6-trimethyl cyclohexene derivatives by means of treating said derivatives with hydrogen in the presence of a supported palladium catalyst such as palladium-on-calcium carbonate or palladium-on-barium sulfate in the presence of a quinoline activator. The resulting products are useful for their organoleptic properties as foodstuff flavorants and flavor enhancers, perfume composition ingredients, perfumed article ingredients and tobacco flavorants and flavor enhancers.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: September 29, 1981
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, Frederick L. Schmitt, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4289145
    Abstract: Described is a process for augmenting or enhancing the aroma or taste of a smoking tobacco comprising the step of adding to smoking tobacco an organoleptic property modifying amount of the compound having the structure: ##STR1##
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: September 15, 1981
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, John B. Hall, Robin Kasper, Manfred H. Vock, Ronald Schreck, Edward J. Granda, Joaquin F. Vinals
  • Patent number: 4287133
    Abstract: Described is the compound 6-hydroxy-2,6-dimethylheptanal and methods for preparing foodstuffs, flavoring compositions for foodstuffs, tobacco compositions, flavoring compositions for tobacco, perfume compositions, ingredients for perfume compositions, perfumed articles and ingredients for perfumed articles by including said 6-hydroxy-2,6-dimethylheptanal therein in order to produce:(a) In food flavorings, sweet, green, melon-like, tropical fruit-like, seedy and raspberry aromas and/or tastes;(b) In perfumes, sweet, green, melony, floral and muguet-like aromas; and(c) In tobaccos, sweet, fruity-melon-like, peach-like, and floral aromas prior to and on smoking in the main stream and in the sidestream in smoking tobaccos and the same aroma and taste nuances in the filter.Processes for synthesizing the 6-hydroxy-2,6-dimethylheptanal by hydrolysis of 2,6-dimethyl-5-heptenal are also described.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: September 1, 1981
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark A. Sprecker, Robert W. Trenkle, Braja D. Mookherjee, Manfred H. Vock, Joaquin F. Vinals, Jacob Kiwala, Frederick L. Schmitt
  • Patent number: 4284654
    Abstract: Described is the use of the compound having the structure: ##STR1## for augmenting or enhancing the aroma or taste of a foodstuff.
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: August 18, 1981
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Robert W. Trenkle, Braja D. Mookherjee, John B. Hall, Robin Kasper, Manfred H. Vock, Ronald Schreck, Edward J. Granda, Joaquin F. Vinals