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For the Inventor, By the Inventor

Chula Vista, CA, United States of America

John R Kirwan, Jr

This inventor holds 1 USPTO granted patent. Top assignee: Desalination Systems, Inc.. Active years: 1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John R Kirwan, Jr. Retrieved from https://idiyas.com/inventor/john-r-kirwan-jr

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

USPTO Granted Patents = 1

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 28(Granted Patents)


Company Filing History:

goldMedal1 out of 24 
 
Desalination Systems, Inc.
 patents

Years Active: 1985

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1 patent (USPTO):Explore Patents
1. 4548714 - Semipermeable membrane cartridge for use with a pressure container (1985-10-22),

Title: John R Kirwan, Jr: Innovator in Membrane Technology

Introduction

John R Kirwan, Jr. is a notable inventor based in Chula Vista, CA (US). He has made significant contributions to the field of membrane technology, particularly in the development of innovative solutions for pressure containers. His work has led to advancements that enhance the efficiency and functionality of membrane cartridges.

Latest Patents

Kirwan holds a patent for a "Semipermeable membrane cartridge for use with a pressure container." This invention represents an improvement in membrane cartridges designed for insertion into pressure-resistant containers. The cartridge features a central passageway that holds a permeate collection tube. It is constructed through a spiral winding of a laminate leaf, which includes semipermeable membrane sheet material, permeate transfer sheet material, and porous grid sheet material. An extension on the leaf of the porous grid material is designed to encompass the circumference of the cartridge when positioned inside the container. Additionally, the cartridge may have an outer wrapping made of water-soluble sheet material.

Career Highlights

Kirwan is associated with Desalination Systems, Inc., where he applies his expertise in membrane technology. His innovative approach has contributed to the company's mission of providing effective desalination solutions. With a focus on improving water purification processes, Kirwan's work is vital in addressing global water scarcity issues.

Collaborations

One of Kirwan's notable collaborators is Donald T Bray. Their partnership has fostered advancements in membrane technology, leading to innovative solutions that benefit the industry.

Conclusion

John R Kirwan, Jr. is a distinguished inventor whose work in membrane technology has made a significant impact. His patent for a semipermeable membrane cartridge showcases his innovative spirit and dedication to improving water purification methods. Through his contributions, Kirwan continues to play a crucial role in addressing pressing global challenges.

Profile summary based on public USPTO records.
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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