Patents by Inventor George L. Hoh

George L. Hoh 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).

  • Blends of ionomer with propylene copolymer
    Patent number: 4550141
    Abstract: Blends of (a) 80-93 weight percent of an ethylene/acid ionomer, and (b) 7-20 weight percent of a propylene/.alpha.-olefin copolymer are used to prepare peelable seals having nearly constant and predictable peel strength over an extended heat seal temperature range. Some of the seals so produced also show stress whitening.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: October 29, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George L. Hoh
  • Blends of ionomer with propylene copolymer and articles
    Patent number: 4539263
    Abstract: Blends of (a) 80-93 weight percent of an ethylene/acid ionomer, and (b) 7-20 weight percent of a propylene/.alpha.-olefin copolymer are used to prepare peelable seals having nearly constant and predictable peel strength over an extended heat seal temperature range. Some of the seals so produced also show stress whitening.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: September 3, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George L. Hoh
  • Heat seal composition
    Patent number: 4469754
    Abstract: Heat seal compositions and articles including the compositions are disclosed. The compositions exhibit a broad temperature range for making heat seals of variable strengths and are useful as the sole heat seal composition in making flexible packages requiring both permanent and peelable seals.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: September 4, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George L. Hoh, Donald A. Vassallo
  • Heat seal composition comprising a blend of metal neutralized polymers
    Patent number: 4346196
    Abstract: Heat seal compositions and articles including the compositions are disclosed. The compositions exhibit a broad temperature range for making heat seals of variable strengths and are useful as the sole heat seal composition in making flexible packages requiring both permanent and peelable seals.
    Type: Grant
    Filed: September 10, 1980
    Date of Patent: August 24, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George L. Hoh, Donald A. Vassallo
  • Curable blends of chloroprene polymer and ethylene copolymer
    Patent number: 4275181
    Abstract: Curable blends of chloroprene polymers are obtained by modification with ethylene/carbon monoxide or sulfur dioxide copolymers containing an additional softening copolymerizable comonomer such as vinyl esters, alkyl acrylates and methacrylates, alkyl vinyl ether, acrylonitrile, methacrylonitrile etc. Modification with the ethylene copolymers results in improved processing, increased resistance to ozone and reduced cost.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: June 23, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George L. Hoh
  • Vulcanizable ethylene/vinyl acetate/carbon monoxide terpolymers
    Patent number: 4172939
    Abstract: A vulcanizable composition comprising an ethylene/vinyl acetate/carbon monoxide terpolymer, said terpolymer containing about 5-30%, by weight, carbon monoxide, and having dispersed therein a vulcanizing agent of elemental sulfur or a compound that releases sulfur at vulcanization temperatures. The cured elastomer is useful for making hose, belts, wire coverings and other elastomeric articles in a conventional manner.
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: October 30, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George L. Hoh