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. 22, 1988
Filed:
May. 27, 1987
Gerald A Krulik, Laguna Hills, CA (US);
Morton Thiokol, Inc., Chicago, IL (US);
Abstract
An improved electrodialysis stack and method of making the same wherein the border surface areas of the flow spacer frames are microroughened, as by chemical etching, sandblasting, with a patterned mold or embossing, the peripheral inner edges of the frame border are machined smooth, the microroughened border surface areas are coated with a thin layer of inert grease such as silicone, and placed under pressure with other electrodialysis components to form a closed system closely packed and essentially solid stack which is free from cross leakage between compartments and seepage therefrom.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile