Patents by Inventor Ronald P. Schreck

Ronald P. Schreck 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: 6353147
    Abstract: Vaginal epithelium drying is substantially reduced or prevented by reducing the capillary suction pressure of a tampon in early use. This is accomplished by modifying the capillary suction pressure of the surface of the tampon by using hydrophobic components in the tampon, such as hydrophobic fibers and/or hydrophobic cover material. Other means of obtaining a lower capillary suction pressure include increasing the denier of the fibers in the tampon's absorbent core and/or decreasing the density of the tampon.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: March 5, 2002
    Assignee: McNeil-PPC, Inc.
    Inventors: Theodore A. Foley, Linda M. Pierson, Harry L. Pine, Ronald P. Schreck, Richard A. Schroeder
  • Patent number: 5817077
    Abstract: Vaginal epithelium drying is substantially reduced or prevented by reducing the capillary suction pressure of a tampon in early use. This is accomplished by modifying the capillary suction pressure of the surface of the tampon by using hydrophobic components in the tampon, such as hydrophobic fibers and/or hydrophobic cover material. Other means of obtaining a lower capillary suction pressure include increasing the denier of the fibers in the tampon's absorbent core and/or decreasing the density of the tampon.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: October 6, 1998
    Assignee: McNeil-PPC, Inc.
    Inventors: Theodore A. Foley, Linda M. Pierson, Harry L. Pine, Ronald P. Schreck
  • 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
  • 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
  • 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
  • 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
  • Patent number: 4458699
    Abstract: Described is the use of compounds defined according to the structure: ##STR1## wherein R represents hydrogen or acetyl in augmenting or enhancing the aroma or taste of smoking tobacco compositions or smoking tobacco articles.
    Type: Grant
    Filed: February 11, 1982
    Date of Patent: July 10, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ronald P. Schreck, John B. Hall
  • 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
  • Patent number: 4385072
    Abstract: Described is a process for augmenting or enhancing the aroma or taste of foodstuffs and chewing gums comprising the step of adding to a foodstuff composition or chewing gum composition, an aroma or taste augmenting or enhancing quantity of at least one of the two compounds having the structures: ##STR1##
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: May 24, 1983
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ronald P. Schreck, Kenneth K. Light, John B. Hall, Frederick L. Schmitt, Manfred H. Vock, William L. Schreiber, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4374055
    Abstract: Described is a process for preparing several substituted or unsubstituted cycloalkyl acyl alkanoates defined according to the generic structure: ##STR1## wherein R.sub.1 and R.sub.2 taken together complete a cycloalkyl moiety or methyl, dimethyl or trimethyl substituted cycloalkyl moiety containing five or six carbon atoms in the ring and wherein R.sub.3 is C.sub.1 -C.sub.3 lower alkyl and R.sub.4 is methyl or hydrogen by reacting a compound having the generic structure: ##STR2## in an aqueous silver-ion containing solution having a weakly acidic pH at elevated temperatures.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: February 15, 1983
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ronald P. Schreck, Kenneth K. Light, John B. Hall, Frederick L. Schmitt, Manfred H. Vock, William L. Schreiber, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4359395
    Abstract: Described is a process for preparing several substituted or unsubstituted cycloalkyl acyl alkanolates defined according to the generic structure: ##STR1## wherein R.sub.1 and R.sub.2 taken together complete a cycloalkyl moiety or methyl, dimethyl or trimethyl substituted cycloalkyl moiety containing five or six carbon atoms in the ring and wherein R.sub.3 is C.sub.1 -C.sub.3 lower alkyl and R.sub.4 is methyl or hydrogen by reacting a compound having the generic structure: ##STR2## in an aqueous silver-ion containing solution having a weakly acidic pH at elevated temperatures.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: November 16, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ronald P. Schreck, Kenneth K. Light, John B. Hall, Frederick L. Schmitt, Manfred H. Vock, William L. Schreiber, Joaquin F. Vinals, Jacob Kiwala
  • Patent number: 4327749
    Abstract: Described is a process for preparing several substituted or unsubstituted cycloalkyl acyl alkanoates defined according to the generic structure: ##STR1## wherein R.sub.1 and R.sub.2 taken together complete a cycloalkyl moiety or methyl, dimethyl or trimethyl substituted cycloalkyl moiety containing five or six carbon atoms in the ring and wherein R.sub.3 is C.sub.1 -C.sub.3 lower alkyl and R.sub.4 is methyl or hydrogen by reacting a compound having the generic structure: ##STR2## in an aqueous silver-ion containing solution having a weakly acidic pH at elevated temperatures.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: May 4, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Ronald P. Schreck, Kenneth K. Light, John B. Hall, Frederick L. Schmitt, Manfred H. Vock, William L. Schreiber, Joaquin F. Vinals, Jacob Kiwala