Patents by Inventor Paul G. Haines

Paul G. Haines 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).

  • Catalyst for the preparation of methyl mercaptan from carbon oxides
    Patent number: 4536492
    Abstract: A process is provided for the manufacture of methyl mercaptan with substantial reduction of by-product methane by intimate mixture of carbon oxide, sulfur or hydrogen sulfide and hydrogen at elevated temperature and pressure with a single-phase, solid catalyst system comprising a porous alumina-containing support upon which is deposited a mixture of manganese sulfide and alkali metal sulfide.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: August 20, 1985
    Assignee: Pennwalt Corporation
    Inventor: Paul G. Haines
  • Preparation of methyl mercaptan from carbon oxides
    Patent number: 4449006
    Abstract: A process is provided for the manufacture of methyl mercaptan with substantial reduction of by-product methane by intimate mixture of carbon oxide, sulfur or hydrogen sulfide and hydrogen at elevated temperature and pressure with a single-phase, solid catalyst system comprising a porous alumina-containing support upon which is deposited a mixture of manganese sulfide and alkali metal sulfide.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: May 15, 1984
    Assignee: Pennwalt Corporation
    Inventor: Paul G. Haines
  • N-(Oxazolidinothio) imides that provide scorch retardant nonblooming elastomeric compositions
    Patent number: 4275014
    Abstract: A selected group of N-(oxazolidinothio) imides are active as scorch retarders without causing bloom in both unsaturated elastomers and elastomers with a slight degree of unsaturation.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: June 23, 1981
    Assignee: Pennwalt Corporation
    Inventors: Ivan C. Popoff, Everett A. Mailey, Paul G. Haines
  • N-(Oxazolidinothio) imides that provide scorch retardant nonblooming elastomeric compositions
    Patent number: 4220589
    Abstract: A selected group of N-(oxazolidinothio) imides are active as scorch retarders without causing bloom in both unsaturated elastomers and elastomers with a slight degree of unsaturation.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: September 2, 1980
    Assignee: Pennwalt Corporation
    Inventors: Ivan C. Popoff, Everett A. Mailey, Paul G. Haines
  • Purification of N,N'-disubstituted p-phenylenediamine antiozonants and oil stabilizers
    Patent number: 4131622
    Abstract: Process for purifying N,N'-disubstituted p-phenylenediamine antiozonants and oil stabilizers utilizes a steam-distillation step to remove Schiff's base derivatives of p-phenylenediamine and N-monosubstituted p-phenylenediamine as well as aldehyde and ketone contaminants and corresponding alcohols thereof.
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: December 26, 1978
    Assignee: Pennwalt Corporation
    Inventors: Ivan C. Popoff, Paul G. Haines