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For the Inventor, By the Inventor

Garfield, NJ, United States of America

Membrex, Inc.

Calculating rank
USPTO Granted Patents = 12

Trademarks = 1

Forward Citations = 507

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10 inventors (with patents filed for the assignee):

goldMedal Philip M Rolchigo (6 out of 21 patents)

silverMedal Leonard Timbrook Hodgins (6 out of 18 patents)

bronzeMedal Guanghua Yu (3 out of 6 patents)

4.  Iosif Shmidt (3 out of 3 patents)

5.  Mario Badiali (3 out of 3 patents)

6.  Malcolm Kahn (2 out of 19 patents)

7.  Edgar Samuelson (1 out of 4 patents)

8.  Michael S Rashev (1 out of 3 patents)

9.  Edgar Samuelsen (1 out of 2 patents)

10.  Chang W Jen (1 out of 1 patent)


12 patents:

1. 5993674 - Rotary disc filtration device with means to reduce axial forces (1999-11-30),
2. 5944998 - Rotary filtration device with flow-through inner member (1999-08-31),
3. 5820690 - Cleaning processes using cleaners exhibiting cloud point behavior (1998-10-13),
4. 5707517 - Immersible rotary disc filtration device (1998-01-13),
5. 5254250 - Rotary filtration device and filter pack therefor (1993-10-19),
6. 5143630 - Rotary disc filtration device (1992-09-01),
7. 5000848 - Rotary filtration device with hyperphilic membrane (1991-03-19),
8. 4911847 - Process for controlling the permeate composition in a rotary filtration (1990-03-27),
9. 4906379 - Hydrophilic article and method of producing same (1990-03-06),
10. 4876013 - Small volume rotary filter (1989-10-24),
11. 4867878 - Liquid bearing for rotary apparatus (1989-09-19),
12. 4790942 - Filtration method and apparatus (1988-12-13),
Company Overview
Membrex, Inc. is a specialized company based in Garfield, New Jersey, focusing on the development and manufacturing of advanced filtration and separation technologies. The organization is dedicated to providing innovative solutions for various industries, including pharmaceuticals, biotechnology, and water treatment. Membrex leverages its expertise in membrane technology to enhance product performance and efficiency, contributing to improved processes in critical applications. The company's commitment to quality and innovation positions it as a key player in the filtration sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

12 Patents

#4 in Garfield, NJ

#961 in New Jersey

#25,589 in US

#48,235 in the World

Garfield, NJ (US)
Garfield, NJ, United States of America

Membrex, Inc.

Forward Citations = 507

10 inventors:

goldMedal Philip M Rolchigo (6 out of 21 patents)

silverMedal Leonard Timbrook Hodgins (6 out of 18 patents)

bronzeMedal Guanghua Yu (3 out of 6 patents)

4.  Iosif Shmidt (3 out of 3 patents)

5.  Mario Badiali (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Membrex, Inc.. Retrieved from https://idiyas.com/company/membrex

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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