Robert E. Kesting — 12 Patents at Puropore

Robert E. Kesting has been granted 12 US patents while listed as an inventor at Puropore. The first was granted in 1980 and the most recent in September 1999. Robert E. Kesting ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Robert E. Kesting in Irvine, CA, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5958989	Highly asymmetric ultrafiltration membranes	I-Fan Wang, Jerome F. Ditter, Richard A. Morris	1999-09-28	$13,430,000
5928774	Highly asymmetric ultrafiltration membranes	I-Fan Wang, Jerome F. Ditter, Richard A. Morris	1999-07-27	$15,015,000
5685991	Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same	Peter J. Degen, John Mischenko, III, Moira H. Bilich, Trevor A. Staff	1997-11-11	$15,932,000
5480554	Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same	Peter J. Degen, John Mischenko, III, Moira H. Bilich, Trevor A. Staff	1996-01-02	$9,678,000
4880441	Asymmetric gas separation membranes having graded density skins	Alfred K. Fritzsche, Milton K. Murphy, Alan Handerman, Clint A. Cruse, Raymond F. Malon	1989-11-14	$13,749,000
4871494	Process for forming asymmetric gas separation membranes having graded density skins	Alfred K. Fritzsche, Milton K. Murphy, Alan C. Handermann, Clint A. Cruse, Raymond F. Malon	1989-10-03	$9,144,000
4477598	High strength nylon blend membranes	—	1984-10-16
4450126	High strength nylon blend membranes	—	1984-05-22
4333972	Highly anisotropic membranes	—	1982-06-08
4280970	Polyoxyethylene grafted membrane materials with grafting links derived from a diisocyanate	—	1981-07-28
4220477	Flexible microporous cellulosic membranes and methods of formation and use thereof	—	1980-09-02
4219517	Process for spinning dense hollow fiber cellulosic membrane	—	1980-08-26

Robert E. Kesting — 12 Patents

Issued Patents All Time

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