The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 1999
Filed:
Jul. 25, 1996
Applicant:
Inventor:
Ching-Ping Wong, Lawrenceville, NJ (US);
Assignee:
Lucent Technologies, Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ; B01D / ;
U.S. Cl.
CPC ...
134 26 ; 10 38 ; 10 40 ; 10 42 ; 210689 ;
Abstract
Minute quantities of water in a terpene cleaning solvent cause a reaction with certain metals, particularly lead, tin and copper, which reactions are responsible for corrosion of the metal. Such reactions can be reduced or substantially eliminated by exposing the cleaning solvent to a molecular sieve prior to the cleaning operation. The molecular sieve typically includes a plurality of beads of zeolite to which the cleaning solvent is exposed. The molecular sieve traps the water molecules from the solvent so that, after treatment, the solvent contains substantially no water molecules.