For the Inventor, By the Inventor

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Oceanside, CA, United States of America

Hydranautics

USPTO Granted Patents = 26

% Expired Patents = 23.1

EPO Patents = 6

Trademarks = 13

Forward Citations = 661

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27 inventors (with patents filed for the assignee):

Mark Wilf (7 out of 9 patents)

John E Tomaschke (7 out of 9 patents)

Craig Roger Bartels (6 out of 8 patents)

4. Norio Ikeyama (4 out of 9 patents)

5. Henry B Chambers (3 out of 3 patents)

6. Irving Shelby (2 out of 2 patents)

7. Masahiko Hirose (1 out of 31 patents)

8. Ben Weaver (1 out of 1 patent)

9. Benjamin Robert Freeman (1 out of 1 patent)

10. Dan Schuneman (1 out of 1 patent)

11. Hailin Ge (1 out of 1 patent)

12. Il Juhn Roh (1 out of 2 patents)

13. Dirk Dewinter (1 out of 1 patent)

14. Rich Franks (1 out of 1 patent)

15. Pravin Murkute (1 out of 1 patent)

Core Competencies:

Filtration Modules

Aeration Diffuser

RFID Tag

Boron Adsorption

Membrane Surface

Hollow Fiber Membranes

Spiral Wound Membrane

Nanofiltration

Permeate Flow

Sanitary Filter

Interfacially Synthesized Membranes

26 patents: Sort by Forward Citations

1. 12251665 - Modular manifold for filtration modules (2025-03-18),

2. 9731230 - Aeration diffuser for pressurized liquid treatment module and method of operating same (2017-08-15),

3. 8617397 - Reverse osmosis filtration devices with RFID tag-powered flow and conductivity meters (2013-12-31),

4. 8388842 - Brine seal for a filtration device (2013-03-05),

5. 8357300 - Methods and materials for selective boron adsorption from aqueous solution (2013-01-22),

6. 7736495 - Filtration devices with embedded radio frequency identification (RFID) tags (2010-06-15),

7. 7584061 - Device for measuring permeate flow and permeate conductivity of individual reverse osmosis membrane elements (2009-09-01),

8. 7531042 - Methods for cleaning and maintaining membrane surface during filtration (2009-05-12),

9. 7481917 - Filtration devices with embedded radio frequency identification (RFID) tags (2009-01-27),

10. 7442309 - Methods for reducing boron concentration in high salinity liquid (2008-10-28),

11. 7378024 - Methods for improving filtration performance of hollow fiber membranes (2008-05-27),

12. 7001518 - Low pressure reverse osmosis and nanofiltration membranes and method for the production thereof (2006-02-21),

13. 6464873 - Interfacially polymerized, bipiperidine-polyamide membranes for reverse osmosis and/or nanofiltration and process for making the same (2002-10-15),

14. 6413424 - Sanitary style filter element (2002-07-02),

15. 6183639 - Hollow fiber filter module and method of manufacturing same (2001-02-06),

Company Overview

Hydranautics, based in Oceanside, California, specializes in the development and manufacturing of advanced membrane technologies for water treatment and desalination. The company focuses on providing innovative solutions that enhance water purification processes, catering to a diverse range of industries including municipal, industrial, and agricultural sectors. With a commitment to sustainability and efficiency, Hydranautics plays a significant role in addressing global water challenges through its cutting-edge research and technology in membrane filtration.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

26 Patents

#4 in Oceanside, CA

#3,043 in California

#12,865 in US

#24,826 in the World

Oceanside, CA, United States of America

Hydranautics

Forward Citations = 661

27 inventors:

Mark Wilf (7 out of 9 patents)

John E Tomaschke (7 out of 9 patents)

Craig Roger Bartels (6 out of 8 patents)

4. Norio Ikeyama (4 out of 9 patents)

5. Henry B Chambers (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hydranautics. Retrieved from https://idiyas.com/company/hydranautics

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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