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Robert E Kesting: Microporous polyester membranes and polymer assisted phase inversion process for their manufacture. Chemical Systems Incorporated, Knobbe Martens Olson Hubbard & Bear, May 18, 1976: US03957651 (34 worldwide citation)

Microporous membrane filters composed of polyesters derived from aromatic dibasic acids and especially polytetramethylene terephthalate are produced. These membranes are produced by a polymer assisted phase inversion process involving casting a solution of the polyester and assisting polymer to form ...


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Robert E Kesting: Nonbiodegradable polymers. Chemical Systems Incorporated, Knobbe Martens Olson Hubbard & Bear, July 12, 1977: US04035457 (5 worldwide citation)

A new composition, cellulose acetate-chlorobutyrate pyridinium salt, which has superior biodegradation resistance and polymer membrane forming characteristics and related compositions.


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Glen D Jenkins: Container for a bubbler. Advanced Delivery & Chemical Systems Incorporated, Leydig Voit & Mayer, April 10, 1990: US04915880 (5 worldwide citation)

A bubbler assembly includes a quartz container formed with an indented bottom which defines a concave pocket to impart strength to the container. The pocket is filled with a heat conductive epoxy in order to improve the heat transfer characteristics of the bottom of the container.


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