U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Solvent mixture for use in a vapor degreaser and method of cleaning an article in a vapor degreaser utilizing said solvent

Patent 6402857 Issued on June 11, 2002. Estimated Expiration Date: Icon_subject November 29, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3730904

3881949

Solvent composition used to clean polyurethane foam generating equipment
Patent #: 4056403
Issued on: 11/01/1977
Inventor: Cramer ,   et al.

Limulus lysate of improved sensitivity and preparing the same
Patent #: 4107077
Issued on: 08/15/1978
Inventor: Sullivan, Jr. ,   et al.

Emulsifier-solvent scour composition and method of treating textiles therewith
Patent #: 4135878
Issued on: 01/23/1979
Inventor: Bishop ,   et al.

Stabilization of 1,1,1-trichloroethane compositions against metal-induced decomposition with a polyalkylene glycol monoalkyl ether
Patent #: 4189397
Issued on: 02/19/1980
Inventor: Allen

Removal of thermoplastic resin coatings from paperboard with halogenated hydrocarbon vapors
Patent #: 4193838
Issued on: 03/18/1980
Inventor: Kelly ,   et al.

Stabilized methylchloroform composition
Patent #: 4394284
Issued on: 07/19/1983
Inventor: Pryor

Carpet cleaner
Patent #: 4652389
Issued on: 03/24/1987
Inventor: Moll

Detergent compositions for removing iodine stains
Patent #: 4828569
Issued on: 05/09/1989
Inventor: Heath ,   et al.

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Inventors

Application

No. 725796 filed on 11/29/2000

US Classes:

134/31, Gas or vapor condensation or absorption oowork134/11, Gas or vapor form agent condensed or absorbed on work134/12, By distilling, or liquefying vapors of, used agent134/19, Including work heating or contact with combustion products134/30, Including steam, gaseous agent or temperature feature134/38, Paints, varnishes, lacquers, or enamels, removal134/40, Oils, grease, tar, or wax removal, by dissolving510/175, For printed or integrated electrical circuit, or semiconductor device510/255, With corrosion inhibiting or solvent stabilizing component510/256, With halogenated hydrocarbon, abrasive, coating, or polishing component510/264, Organic nitrogen containing substituent in the component510/266, Plural inhibitor or stabilizer components510/273, Halogenated hydrocarbon component (e.g., degreasing composition, etc.)510/364, For displacing organic liquid film from a solid surface510/365, For removing greasy or oily contaminant from a substrate510/412, Halogenated hydrocarbon component510/461Specific organic component (e.g., triazines, etc.)

Examiners

Primary: El-Arini, Zeinab

Attorney, Agent or Firm

Foreign Patent References

  • 350316 EP. 01/22/1990
  • 2732963 FR. 10/22/1996
  • 1276783 GB. 06/22/1972
  • 02 135 296 JP. 05/22/1990
  • 02 185 597 JP. 07/22/1990
  • 03 097 793 JP. 04/22/1991
  • 6-128591 JP. 01/22/1994
  • 7-150196 JP. 06/22/1995
  • 7-150197 JP. 06/22/1995
  • 7-292393 JP. 11/22/1995
  • 7-310097 JP. 11/22/1995
  • 8-067643 JP. 03/22/1996
  • WO 97/16524 WO. 05/22/1997
  • WO 97/16583 WO. 05/22/1997

International Classes

C11D 007/30
C11D 007/24
C11D 007/26
B08B 003/08

Abstract

The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.

Other References

  • Kirk-Other, Enclyopedia of Chemical Technology, 4th ed., John Wiley and Sons, pp. 569, 570, 574, 575 (Month of publication is unknown)
  • Written Opinion in International Application No. PCT/US97/05183, dated Jan. 27, 199
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