Stephen B. Kessler — 23 Patents at Pneumatic Scale

Stephen B. Kessler has been granted 23 US patents while listed as an inventor at Pneumatic Scale. The first was granted in 1981 and the most recent in November 2025. Stephen B. Kessler ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list Stephen B. Kessler in Princeton, MA, US.

Patents per Year

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12458985	Centrifuge system for separating cells in suspension	T. David Marro	2025-11-04
12377423	Centrifuge system for separating cells in suspension	T. David Marro	2025-08-05
12350686	Centrifuge system for separating cells in suspension	T. David Marro	2025-07-08
12318710	Centrifuge system for separating cells in suspension	T. David Marro	2025-06-03
11957998	Centrifuge system for separating cells in suspension	T. David Marro	2024-04-16
11878312	Centrifuge system for separating cells in suspension	T. David Marro	2024-01-23
11878311	Centrifuge system for separating cells in suspension	T. David Marro	2024-01-23
11065629	Centrifuge system for separating cells in suspension	T. David Marro	2021-07-20
11033911	Centrifuge system for separating cells in suspension	T David Marro	2021-06-15
10384216	Centrifuge system including a control circuit that controls positive back pressure within the centrifuge core	Daniel S. Sutton, T David Marro	2019-08-20
9222067	Single use centrifuge system for highly concentrated and/or turbid feeds	T. David Marro	2015-12-29
8383959	Metamaterial spheric alignment mechanism	—	2013-02-26
7507916	Spheric alignment mechanism	—	2009-03-24
7465886	Spheric alignment mechanism entropic step down and propulsion system	—	2008-12-16
6616590	Low-shear feeding system for use with centrifuges	Robert B. Carr, Gary W. Brown, Sr.	2003-09-09
6416454	Control of separation performance in a centrifuge by controlling a temperature differential therein	Ascher H. Shapiro, William M. Cox	2002-07-09
6095153	Vaporization of volatile materials	T. David Marro	2000-08-01
5846427	Extra-lumenal crossflow plasmapheresis devices and method of use thereof	Sumith Ranil Wickramasinghe	1998-12-08
5683916	Membrane affinity apparatus and purification methods related thereto	Randal A. Goffe, Stephen E. Zale, James L. O'Connor	1997-11-04	$405,000
4681092	Balloon catheter wrapping apparatus	George Cho	1987-07-21
4540492	Method and apparatus for treating whole blood	—	1985-09-10	$2,981,000
4350593	Assembly, compositions and method for separating blood	—	1982-09-21	$4,406,000
4257886	Apparatus for the separation of blood components	—	1981-03-24	$2,691,000

Stephen B. Kessler — 23 Patents

Patents per Year

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