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:
Nov. 30, 1982
Filed:
Jan. 22, 1981
Applicant:
Inventor:
Bruce D Spivack, Norristown, PA (US);
Assignee:
PQ Corporation, Valley Forge, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
428398 ; 264-8 ; 264 13 ;
Abstract
Hollow fibers are prepared by spray drying a solution of a film-former in a volatile solvent. The viscosity of the solution must be 1.5 to 10 times the viscosity that usually results in spheres or microspheres. The preferred film-forming substance is a combination of sodium silicate and a 'polysalt.'