Patents by Inventor Robert Walter Trenkle

Robert Walter 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).

  • Tetracyclic alcohols
    Patent number: 3991123
    Abstract: Described is a genus of novel compounds, defined by the generic structure: ##SPC1##Wherein n is 0 or 1 and X is selected from the group consisting of 1,2-cyclo-propylene having the structure: ##SPC2##And 1,2-ethenylene having the structure: ##SPC3##X being cyclopropylene when n is 1, useful for altering, enhancing, modifying or imparting an aroma of or to consumable products including perfumes, perfume comositions and perfumed articles.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: November 9, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja Dulal Mookherjee, Robert Walter Trenkle, Kenneth K. Light, Edward J. Shuster
  • Tobacco article comprising a flavoring composition selected from butanone derivatives and the process for making the same
    Patent number: 3977419
    Abstract: Described is a process comprising adding to tobacco itself, or to homogenized or reconstituted tobacco (for subsequent incorporation into smoking articles along with tobacco blend) an amount sufficient to alter the flavor or aroma of the ultimate tobacco mixture of 4-(2,6,6-trimethyl-1,3-cyclohexadien-1-yl)-2-butanone and/or 4-(6,6-dimethyl-2-methylene-3-cyclohexen-1-yl)-2-butanone.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: August 31, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Braja Dulal Mookherjee, Robert Walter Trenkle, Manfred Hugo Vock, Edward J. Shuster