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:
Dec. 17, 1991
Filed:
Jun. 01, 1989
Applicant:
Inventors:
Martin Katz, Menlo Park, CA (US);
Helen C Leong, Atherton, CA (US);
Chung-Heng Cheng, San Jose, CA (US);
Assignee:
Advanced Polymer Systems, Redwood City, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; A61K / ; A61M / ;
U.S. Cl.
CPC ...
424489 ; 424484 ; 424501 ; 427-2 ; 514951 ; 604 12 ; 604265 ; 604363 ;
Abstract
Articles for use in contact with animal tissue, such as surgical and first aid supplies, health care products and personal hygiene products, are dusted with microspheres for lubricating purposes or for the application of diffusible adjuvants. In the latter case, the microspheres are porous, with a continuous network of pores open to the exterior of the particles, permitting outward diffusion of the adjuvants at a controlled rate depending on pore size. The adjuvants include such substances as biologically active substances, deodorants, flavors, fragrances, and liquid lubricants.