Patents by Inventor Fritz Raabe

Fritz Raabe 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).

  • Multilayer plastic film, process for its production and its use
    Patent number: 4370374
    Abstract: The invention provides a multilayer plastics film comprising at least two film layers, one of which has a thickness of 10 to 50 .mu.m and a softening point of 140.degree. to 200.degree. C., and the other of which has a thickness of 10 to 50 .mu.m, a softening point of 70.degree. to 130.degree. C. and initial melting point of from 100.degree. to 190.degree. C., there being a temperature difference of from 30.degree. to 60.degree. C. between the softening point and initial melting point of the latter film. The invention also provides processes for making such multilayer plastics films and their use for applying to articles, particularly foamed plastics, a firmly adhering skin.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: January 25, 1983
    Assignee: Plate Bonn Gesellschaft mit beschrankter Haftung
    Inventors: Fritz Raabe, Robert Schruhl
  • Copolyamides containing caprolactam, lauriclactam and 11-aminoundecanoic acid
    Patent number: 4093492
    Abstract: The invention relates to copolyamides containing caprolactam, lauriclactam and 11-aminoundecanoic acid, useful as heat sealing agents.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: June 6, 1978
    Assignee: Plate Bonn Gesellschaft Mit Beschrankter Haftung
    Inventors: Fritz Raabe, Eduard De Jong
  • Copolyamides containing caprolactam, lauriclactam and hexamethylene diamine adipate
    Patent number: 4030957
    Abstract: The invention relates to copolyamides containing caprolactam, lauriclactam, hexamethylene diamine adipate and hexamethylene diamine salt of an aliphatic dicarboxylic acid with a carbon chain of 9, 10, 12 or 13 carbon atoms. The copolyamides are useful as heat-sealing agents.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: June 21, 1977
    Assignee: Plate Bonn Gesellschaft mit beschrankter Haftung
    Inventors: Fritz Raabe, Eduard DE Jong
  • Copolyamides containing caprolactam, lauriclactam and hexamethylene diamine adipate
    Patent number: 3950297
    Abstract: The invention relates to copolyamides containing caprolactam, lauriclactam, hexamethylene diamine adipate and hexamethylene diamine salt of an aliphatic dicarboxylic acid with a carbon chain of 9, 10, 12 or 13 carbon atoms. The copolyamides are useful as heat-sealing agents.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: April 13, 1976
    Assignee: Plate Bonn Gesellschaft mit beschrankter Haftung
    Inventors: Fritz Raabe, Eduard De Jong
  • Copolyamides containing caprolactam, lauriclactam and 11-aminoundecanoic acid
    Patent number: 3948844
    Abstract: The invention relates to copolyamides containing caprolactam, lauriclactam and 11-aminoundecanoic acid, useful as heat sealing agents.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: April 6, 1976
    Assignee: Plate Bonn Gesellschaft mit beschrankter Haftung
    Inventors: Fritz Raabe, Eduard De Jong