Patents by Inventor Max Glass

Max Glass 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 the preparation of sulphoalkyl quaternary salts
    Patent number: 4539408
    Abstract: Quaternary sulfoalkyl or sulfoalkenyl salts of tertiary amine bases are prepared by reacting the tertiary amine bases at elevated temperatures with a hydroxy alkane sulfonic acid or a hydroxyalkene sulphonic acid.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: September 3, 1985
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Helmut Kampfer, Marie Hase, Max Glass
  • Process for the preparation of N-sulfoalkyl quaternary salts of nitrogen heterocyclics
    Patent number: 4504668
    Abstract: Tertiary amines may be quaternized by heating them with a sulfoalkylating agent of this invention to a temperature of from 100.degree. to 250.degree. C. The sulfoalkylating agents which are believed to be hydroxy alkane sulfonic acid sulfoalkyl esters are free from sultone and are prepared by heating a hydroxy alkane sulfonic acid of propane or butane or the corresponding sultone to a temperature in the region of from 80.degree. to 180.degree. C. in the presence of water in an amount of 1 to 4 moles per mole of hydroxy alkane sulfonic acid or alkane sultone.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: March 12, 1985
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Helmut Kampfer, Marie Hase, Max Glass
  • Process for the production of sulphoalkyl quaternary salts
    Patent number: 4308390
    Abstract: Sulphoalkyl and sulphoalkenyl quaternary salts of heterocyclic nitrogen compounds are prepared by reacting heterocyclic compounds containing a tertiary ring nitrogen atom at an elevated temperature with an O-sulphoalkyl or O-sulphoalkenylisourea compound.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: December 29, 1981
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Helmut Kampfer, Max Glass