Patents by Inventor Shmuel D. Shefer

Shmuel D. Shefer 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).

  • Extruded fragrance-containing polyvinyl alcohol and use thereof
    Patent number: 5543439
    Abstract: Described is a composition of matter particularly useful in fabricating toilet rim blocks consisting of:(a) extruded polyvinyl alcohol or partially hydrolyzed polyvinyl acetate with the maximum mole ratio of acetyl moiety:hydroxyl moiety being about 3:1 having a number average molecular weight of from about 15,000 up to about 68,000 containing 0 up to about 13% by weight of plasticizer;(b) from about 1 up to about 20% by weight of a compatible fragrance contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;(c) from 0 up to about 20% by weight of a "foaming agent" which is a first surfactant and which can be a detergent, contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;(d) from 0 up to about 20% by weight of a hydrophobic silica contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;(e) from 0 up to about 20% by weight of at least one second surfactant in addition to the "foaming agent";(f) from 0 up to about 5% by weight of a
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: August 6, 1996
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Keith J. McDermott, John M. Teffenhart, Shmuel D. Shefer, David A. Greene, Leslie C. Smith, Charles E. J. Beck
  • Formulation of a fat surfactant vehicle containing a fragrance
    Patent number: 5506201
    Abstract: A method is disclosed for producing a fragrance containing solid particle for incorporation into laundry detergent by selecting a fat component such as a fatty acid glyceride, heating said fat component to an elevated temperature sufficient to form a molten melt thereof, selecting a solid surface active agent from the group consisting of SPAN.RTM. surfactants with an HLB of 4.3 to 8.6, heating the surface active agent to form a molten melt thereof and then combining the melts with an aroma chemical to form a mixture. The melt is rapidly cooled to form a solid material.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: April 9, 1996
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Keith J. McDermott, John M. Teffenhart, Eric P. Guenin, Shmuel D. Shefer, Chee-Teck Tan, Leslie C. Smith