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:
Oct. 09, 2001
Filed:
Nov. 19, 1999
Applicant:
Inventor:
Douglas S. Richart, Reading, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D 7/00 ;
U.S. Cl.
CPC ...
B05D 7/00 ;
Abstract
The surfaces of particulate polymers are modified by tackifying the surfaces with a liquid that is normally a gas at room temperature. The treatment is carried out while the gas is in its supercritical range and the surfaces of the particulate polymers are at temperatures below the glass transition temperature (Tg) of the polymers. The surface modifications can include adhering solids to the surfaces, altering the surface configuration of the particles and increasing the size of the particles by controlled agglomeration.