Patents by Inventor Rajat S. Basu

Rajat S. Basu 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).

  • Ethylene oxide-carrier gas compositions having improved flammability suppressant characteristics
    Patent number: 5376333
    Abstract: Compositions of ethylene oxide and monochlorotetrafluoroethane which are useful as sterilizing agents. These novel compositions are environmentally acceptable, possess improved flammability suppressant characteristics, and are capable of maintaining a greater ethylene oxide concentration than traditional sterilizing gas compositions.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: December 27, 1994
    Assignee: AlliedSignal, Inc.
    Inventors: Ian R. Shankland, David P. Wilson, Rajat S. Basu
  • Azeotrope-like compositons of 1,1,1,3,3,5,5,5-octafluoropentane, C1-C5 alkanol and optionally nitromethane
    Patent number: 5290473
    Abstract: Stable azeotrope-like compositions of 1,1,1,3,3,5,5,5-octafluoropentane, C.sub.1 -C.sub.5 alkanol and optionally nitromethane have been discovered which are useful as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: March 1, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Rajat S. Basu, Ellen L. Swan
  • Azeotrope-like compositions of 1,1,1,3,3,5,5,5-octafluoropentane, chlorinated ethylenes, and optionally nitromethane
    Patent number: 5288422
    Abstract: Azeotrope-like compositions comprising 1,1,1,3,3,5,5,5-octafluoropentane, chlorinated ethylene and optionally nitromethane have been discovered which are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: February 22, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Rajat S. Basu, Ellen L. Swan, David P. Wilson
  • 1,1-dichloro-1-fluoroethane dewatering systems
    Patent number: 5256329
    Abstract: This invention relates to compositions comprising a volatile hydrochlorofluorocarbon such as 1,1-dichloro-1-fluoroethane and demulsifer. The compositions are effective as drying agents.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: October 26, 1993
    Assignee: AlliedSignal Inc.
    Inventors: Chien C. Li, Kane D. Cook, Rajat S. Basu, Stanley S. Seelig
  • Partially fluorinated alkanols having a tertiary structure
    Patent number: 5254755
    Abstract: Novel partially fluorinated alkanes having the Formula: ##STR1## wherein each R is the same or different and is selected from the group consisting of CF.sub.3, CHF.sub.2, CH.sub.2 F, and CH.sub.3 CF.sub.2, and R' is an alkyl or fluoroalkyl group having 1 to 6 carbon atoms have utility as solvents in a variety of industrial cleaning applications including cold cleaning, dry cleaning, and defluxing of printed circuit boards.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: October 19, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Chien C. Li, Kane D. Cook, Rajat S. Basu
  • Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and a C.sub. 5 .sub.6 hydrocarbon
    Patent number: 5227088
    Abstract: Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and a hydrocarbon containing five or six carbon atoms have been discovered which are useful in a variety of applications including industrial cleaning, blowing agent and aerosol applications.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: July 13, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Richard M. Hollister, Rajat S. Basu
  • Azeotrope-like compositions of 4-trifluoromethyl-1,1,1,2,2,3,3,5,5,5-decafluoropentane
    Patent number: 5225099
    Abstract: Azeotrope-like compositions comprising 4-trifluoromethyl-1,1,1,2,2,3,3,5,5,5-decafluoropentane and a second component selected from the group consisting of methanol; ethanol; 1-propanol; 2-propanol; 2-methyl-2-propanol; 2-methyl-2-butanol; n-hexane; isohexane; 2-propanone; and 2-butanone and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: July 6, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Rajat S. Basu, Richard M. Hollister, Kane D. Cook, Michael Van Der Puy
  • Azeotrope-like compositions of 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and methanol
    Patent number: 5219489
    Abstract: Azeotrope-like compositions comprising 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and methanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: June 15, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Michael Van Der Puy
  • Azeotrope-like compositions of 1,1,2,3,3-pentafluoropropane
    Patent number: 5219490
    Abstract: Azeotrope like compositions comprising 1,1,2,3,3,-pentafluoropropane and methanol or ethanol and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: June 15, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Rajat S. Basu, Peter B. Logsdon, Leonard M. Stachura, Earl A. E. Lund
  • Azeotrope-like compositions of 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and ethanol or isopropanol
    Patent number: 5219488
    Abstract: Azeotrope-like compositions comprising 2-trifluoromethyl-1,1,1,2-tetrafluorobutane and ethanol or isopropanol and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: June 15, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Rajat S. Basu, Ellen L. Swan, Richard M. Hollister
  • Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and a mono- or dichlorinated C.sub.1 or C.sub.3 alkane
    Patent number: 5213707
    Abstract: Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and a mono- or dichlorinated C.sub.1 or C.sub.3 alkane have been discovered which are useful in a variety of applications including industrial cleaning, blowing agent and aerosol applications.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: May 25, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Richard M. Hollister, Rajat S. Basu
  • Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and isopropanol
    Patent number: 5211866
    Abstract: Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and isopropanol have been discovered which are useful in a variety of applications including industrial cleaning, refrigerant and aerosol applications.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: May 18, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Richard M. Hollister
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, ethanol and cyclopentane
    Patent number: 5190685
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, ethanol and cyclopentane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: March 2, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Leonard M. Stachura, Ellen L. Swan, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluorethane, nitromethane and methanol or ethanol
    Patent number: 5145598
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, nitromethane and ethanol or methanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: September 8, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, 1,2-dichloroethylene, and optionally methanol or ethanol
    Patent number: 5137651
    Abstract: Azeotrope-like compositions comprising 1,1,-dichloro-1-fluoroethane, dichlorotrifluoroethane, 1,2-dichloroethylene, and optionally ethanol or methanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: August 11, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Leonard M. Stachura, Ellen L. Swan, Peter B. Logsdon, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, 1,2-dichloroethylene and optionally an alkanol
    Patent number: 5126067
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichloroethylene, and optionally an alkanol which are useful in a variety of industrial cleaning applications including defluxing and some of which are also useful as blowing agents in the preparation of polyurethane foams.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: June 30, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Richard M. Hollister
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkane having 5 or 6 carbon atoms
    Patent number: 5124064
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkane having 5 or 6 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: June 23, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; methanol; and alkane having 5 or 6 carbon atoms
    Patent number: 5124063
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; methanol; and alkane having 5 or 6 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: June 23, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkene having 5 carbon atoms
    Patent number: 5122294
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; ethanol; and alkene having 5 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: June 16, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; methanol; and alkene having 5 carbon atoms
    Patent number: 5120461
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; methanol; and alkene having 5 carbon atoms are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: June 9, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu