Patents by Inventor Loren B. Schreiber

Loren B. Schreiber 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).

  • Process for producing solanone, norsolanadione and intermediates therefor
    Patent number: 4547594
    Abstract: Described is a process for preparing solanone and norsolanadione wherein in preparing solanone, the compound having the structure: ##STR1## or a mixture of compounds defined according to the structure: ##STR2## is reacted with methyl lithium and the resulting intermediate is hydrolyzed and the resulting compound is dehydrated and wherein in preparing norsolanadione this compound or mixture of compounds is reacted with ethylene glycol or propylene glycol thereby forming a ketal and the resulting ketal is reacted with methyl lithium and the resulting intermediate is then hydrolyzed in the presence of acid in which one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: October 15, 1985
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Kenneth K. Light, William L. Schreiber, Joseph A. McGhie, Ronald P. Schreck, Takao Yoshida, Loren B. Schreiber, Ranya Muralidhara
  • Process for producing solanone, norsolanadione and intermediates therefor
    Patent number: 4517385
    Abstract: Described is a process for preparing solanone and norsolanadione, both useful as tobacco flavorants.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: May 14, 1985
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Kenneth K. Light, William L. Schreiber, Joseph A. McGhie, Ronald P. Schreck, Takao Yoshida, Loren B. Schreiber, Ranya Muralidhara
  • Process for producing solanone, norsolanadione and intermediates therefor
    Patent number: 4489009
    Abstract: Described is a process for preparing solanone and norsolanadione using chemical intermediates: which provide an organoleptically improved smoking tobacco product and additives therefor.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: December 18, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Kenneth K. Light, William L. Schreiber, Joseph A. McGhie, Ronald P. Schreck, Takao Yoshida, Loren B. Schreiber, Ranya Muralidhara
  • Process for producing solanone, norsolanadione and intermediates therefor
    Patent number: 4483995
    Abstract: The invention provides an organoleptically improved smoking tobacco product and additives therefor as well as methods of making the same.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: November 20, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Kenneth K. Light, William L. Schreiber, Joseph A. McGhie, Ronald P. Schreck, Takao Yoshida, Loren B. Schreiber, Ranya Muralidhara
  • Process for producing solanone, norsolanadione and intermediates therefor
    Patent number: 4412083
    Abstract: Described is a process for preparing solanone and norsolanadione using chemical intermediates defined according to the generic structure: ##STR1## wherein X is one of the moieties: ##STR2## wherein R represents hydrogen or methyl; wherein Y represents one of the structures: ##STR3## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond; with the provisos that:(i) when Y is the moiety having the structure: ##STR4## then X is the moiety having the structure: ##STR5## (ii) when X is the moiety having the structure: ##STR6## then Y is the moiety having the structure:--C.tbd.N]In preparing solanone, the compound having the structure: ##STR7## or a mixture of compounds defined according to the structure: ##STR8## is reacted with methyl lithium and the resulting intermediate is hydrolyzed and the resulting compound is dehydrated.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: October 25, 1983
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Kenneth K. Light, William L. Schreiber, Joseph A. McGhie, Ronald P. Schreck, Takao Yoshida, Loren B. Schreiber, Ranya Muralidhara