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).

  • Method of cleaning using partially fluorinated alkenes having a tertiary structure as solvent
    Patent number: 5118360
    Abstract: Novel partially fluorinated alkenes 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 alkenyl or fluoroalkenyl 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: June 20, 1991
    Date of Patent: June 2, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Chien C. Li, Kane D. Cook, Rajat S. Basu
  • Partially fluorinated alkenes having a tertiary structure
    Patent number: 5087777
    Abstract: Novel partially fluorinated alkenes 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 alkenyl or fluoroalkenyl 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: December 4, 1990
    Date of Patent: February 11, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Chien C. Li, Kane D. Cook, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, cyclopentane and optionally an alkanol
    Patent number: 5085798
    Abstract: Stable azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, cyclopentane and optionally an alkanol which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: February 4, 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 a mono- or di-chlorinated C2 or C3 alkane
    Patent number: 5085796
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluorethane, dichlorotrifluoroethane, ethanol, and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane which are useful in a variety of industrial cleaning applications.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: February 4, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Leonard M. Stachura, Peter B. Logsdon, Ellen L. Swan, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, a monochlorinated C3 alkane and optionally an alkanol
    Patent number: 5085797
    Abstract: Stable azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, a mono-chlorinated C.sub.3 alkane and optionally an alkanol which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: February 4, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu
  • Azeotrope-like compositions of 1,1,2-tri-chloro-1,2,2-trifluoroethane, 1,2-dichloroethylene, cyclopentane, methanol, nitromethane and optionally diisopropylamine
    Patent number: 5064558
    Abstract: Stable azeotrope-like compositions consisting essentially of 1,1,2-trichloro-1,2,2-trifluoroethane, 1,2-dichloroethylene, cyclopentane, methanol, nitromethane, and optionally diisopropylamine which are useful in a variety of industrial cleaning applications.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: November 12, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Leonard M. Stachura, Rajat S. Basu, David P. Wilson
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; and methyl formate
    Patent number: 5049301
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; and methyl formate 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 20, 1989
    Date of Patent: September 17, 1991
    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, dichloromethane and optionally alkanol
    Patent number: 5039442
    Abstract: Stable azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, dichloromethane and optionally alkanol which are useful in a variety of industrial cleaning applications and one of which is also useful as a blowing agent in the preparation of polyurethane foams.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: August 13, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Richard M. Hollister
  • Azeotrope-like compositions of dichloro-trifluoroethane, cyclopentane and optionally nitromethane
    Patent number: 5039444
    Abstract: Stable azeotrope-like compositions comprising dichlorotrifluoroethane, cyclopentane and nitromethane which are useful in a variety of industrial cleaning applications.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: August 13, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Earl A. E. Lund, Rajat S. Basu, David P. Wilson, Ellen L. Swan
  • Azeotrope-like compositions of 1,1-dichoro-1-fluoroethane; dichlorotrifluoroethane; and alkane or cycloalkane having 5 carbon atoms
    Patent number: 5026502
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; and alkane or cycloalkane 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 and as blowing agents.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: June 25, 1991
    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; and dichloromethane
    Patent number: 5026501
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane; dichlorotrifluoroethane; and dichloromethane 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 22, 1989
    Date of Patent: June 25, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Peter B. Logsdon, Leonard M. Stachura, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, methanol and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane
    Patent number: 5024781
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, methanol, and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane which are useful in a variety of industrial cleaning applications.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: June 18, 1991
    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, dichlorotrifluoroethane, methanol and cyclopentane
    Patent number: 4994201
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, methanol and cyclopentane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: February 19, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Leonard M. Stachura, Peter B. Logsdon, Ellen L. Swan, Rajat S. Basu
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, and nitromethane
    Patent number: 4965011
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, and nitromethane are stable and have utility as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: October 23, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Joel E. Rodgers
  • Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane,1,2-dichloroethylene, and alkanol having 3 to 7 carbon atoms
    Patent number: 4961870
    Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane; 1,2-dichloroethylene; and alkanol having 3 to 7 carbon atoms have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing a printed circuit boards.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: October 9, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Kane D. Cook, Chien C. Li, Rajat S. Basu, David P. Wilson
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane
    Patent number: 4960535
    Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: October 2, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Peter B. Logsdon, Leonard M. Stachura, Ellen L. Swan, Rajat S. Basu
  • Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and 1-chloropropane
    Patent number: 4904407
    Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and 1-chloropropane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including the defluxing of printed circuit boards.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: February 27, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, David P. Wilson, Earl A. E. Lund
  • Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane and 1-chloropropane
    Patent number: 4900470
    Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane and 1-chloropropane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including the defluxing of printed circuit boards.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: February 13, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Earl A. E. Lund, Ellen L. Swan, Rajat S. Basu, David P. Wilson
  • Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane and methanol
    Patent number: 4894176
    Abstract: Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane 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.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: January 16, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Ian R. Shankland
  • Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane and dimethoxymethane
    Patent number: 4873015
    Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane and dimethoxymethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including the defluxing of printed circuit boards.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: October 10, 1989
    Assignee: Allied-Signal Inc.
    Inventors: Ellen L. Swan, Rajat S. Basu, Earl A. E. Lund, David P. Wilson