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:
Apr. 25, 1995
Filed:
Sep. 28, 1992
Applicant:
Inventors:
Wilfried Krone-Schmidt, Fullerton, CA (US);
Edward S Di Milia, Gardena, CA (US);
Michael J Slattery, Gardena, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B24C / ;
U.S. Cl.
CPC ...
451 75 ; 451 78 ; 451 39 ; 451102 ;
Abstract
An improved apparatus and method adapted for use in removing trace contaminants from the surface of a chosen substrate, such as delicate surfaces or precision parts, by application of a stream or jet spray of expanded fluid to the substrate surface. The improvement consists of controlling electrostatic charges generated on or near the substrate surface during the cleaning process.