Patents by Inventor Michael M. Rauhut

Michael M. Rauhut 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).

  • Patent number: 4379320
    Abstract: In chemical light devices comprising a chemi-luminescent mixture with a first fluorescer contained in a transparent or translucent container, a second fluorescer is incorporated in the walls of the container to shift at least part of the emissions from the device from the shorter wavelength emission of the first fluorescer to a longer wavelength emission of the second fluorescer. The second fluorescer has an absorption spectrum substantially overlapping the emission spectrum of the first fluorescer. The shift is usually about 20 to 100 nanometers and may be as much as 200 nanometers.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: April 5, 1983
    Assignee: American Cyanamid Company
    Inventors: Arthur G. Mohan, Michael M. Rauhut
  • Patent number: 4366079
    Abstract: Water-soluble sulfonated rubrenes are used as fluorescer components in water-soluble chemiluminescent mixtures and particularly in combination with a water-soluble amide of oxalic acid which reacts with hydrogen peroxide to produce chemiluminescence.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: December 28, 1982
    Assignee: American Cyanamid Company
    Inventors: Michael M. Rauhut, Arthur G. Mohan
  • Patent number: 4338213
    Abstract: Quaternary salts of N,N'-bis(morpholinoalkyl)-N,N'-bis(trifluoromethylsulfonyl)oxamides and of N,N'-bis(pyridylalkyl)-N,N'-bis(trifluoromethylsulfonyl)oxamides are useful for generation of chemiluminescence by reaction with hydrogen peroxide in aqueous solvent.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: July 6, 1982
    Assignee: American Cyanamid Company
    Inventors: Shin-Shyong Tseng, Michael M. Rauhut
  • Patent number: 4313843
    Abstract: This invention relates to a chemiluminescent lighting system of practical value and superior properties, having good storage stability.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: February 2, 1982
    Assignee: American Cyanamid Company
    Inventors: Laszlo J. Bollyky, Michael M. Rauhut
  • Patent number: 4308395
    Abstract: An improved single-pot process for synthesis of 3,5,6-trichlorosalicylic acid and esters thereof is described. Salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol to make the ester.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: December 29, 1981
    Assignee: American Cyanamid Company
    Inventors: Robert J. Manfre, Arthur G. Mohan, Michael M. Rauhut
  • Patent number: 4288592
    Abstract: There is provided a process for preparing amides which comprises reacting an amine, or an amide, and an acid halide, or anhydride, in suitable molecular proportions, in an inert organic diluent, in the presence of an effective amount of a molecular sieve, until the reaction is completed, separating the molecular sieve, and recovering the amide from the organic mother liquor.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: September 8, 1981
    Assignee: American Cyanamid Company
    Inventors: Michael M. Rauhut, Shin-Shyong Tseng
  • Patent number: 4282357
    Abstract: Quaternary salts of N,N'-bis(morpholinoalkyl)-N,N'-bis(trifluoromethylsulfonyl)oxamides and of N,N'-bis(pyridylalkyl)-N,N'-bis(trifluoromethylsulfonyl)oxamides are useful for generation of chemiluminescence by reaction with hydrogen peroxide in aqueous solvent.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: August 4, 1981
    Assignee: American Cyanamid Company
    Inventors: Shin-Shyong Tseng, Michael M. Rauhut
  • Patent number: 4226738
    Abstract: N,N'-bis(trifluoromethylsulfonyl)oxamides are described with a number of variations by substitution at the amido nitrogen atoms. These compounds when used in chemiluminescent formulations will furnish superior light intensity and quantum efficiency. Preparation of compounds and their use for chemiluminescence are described.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: October 7, 1980
    Assignee: American Cyanamid Company
    Inventors: Michael M. Rauhut, Shin-Shyong Tseng, Arthur G. Mohan