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For the Inventor, By the Inventor

Malden, MA, United States of America

Asahi/america, Inc.


USPTO Granted Patents = 14

Trademarks = 38

Forward Citations = 307

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11 inventors (with patents filed for the assignee):

goldMedal Leo M Lester (4 out of 4 patents)

silverMedal Christopher G Ziu (3 out of 3 patents)

bronzeMedal Lars O Rosaen (2 out of 29 patents)

4.  Eric J Rosaen (2 out of 2 patents)

5.  David Winsor Marsh (2 out of 3 patents)

6.  H Peter Van Lingen (2 out of 2 patents)

7.  David Schillereff (1 out of 1 patent)

8.  Leslie B Lewis (1 out of 1 patent)

9.  Timothy Robinson (1 out of 1 patent)

10.  Yasunori Kuroki (1 out of 2 patents)

11.  Patrick Hollis (1 out of 1 patent)


14 patents:

1. 6521125 - Oil/hydrocarbon removal system (2003-02-18),
2. 5747701 - Ultrasonic vortex flowmeter having remote signal processing (1998-05-05),
3. 5728947 - Ultrasonic vortex flowmeter having clamp-on housing (1998-03-17),
4. 5593135 - Precise throttling ball valve (1997-01-14),
5. 5402831 - Restraint coupling assembly for double containment pipe system (1995-04-04),
6. 5156185 - Position indicator apparatus for rising stem valve (1992-10-20),
7. 5139230 - Travel stop assembly for valves (1992-08-18),
8. 5090447 - Transparent ball valve assembly (1992-02-25),
9. 5018260 - Supports for double-containment thermoplastic pipe assemblies (1991-05-28),
10. 4930544 - Double-containment thermoplastic pipe assembly (1990-06-05),
11. 4915125 - Valve stem extension assembly (1990-04-10),
12. 4786088 - Double-containment thermoplastic pipe assembly (1988-11-22),
13. 4585032 - Motor operated tandem valve assembly (1986-04-29),
14. 4556194 - Motor operated valve (1985-12-03),
Company Overview
Asahi/America, Inc. is a leading manufacturer and supplier of thermoplastic fluid handling systems, specializing in the design and production of piping systems for various industries. The company focuses on providing innovative solutions for chemical processing, water treatment, and industrial applications. With a commitment to quality and sustainability, Asahi/America serves a diverse clientele across North America, delivering products that enhance operational efficiency and safety in fluid management.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#1 in Malden, MA

#1,362 in Massachusetts

#22,319 in US

#42,249 in the World

Malden, MA (US)
Malden, MA, United States of America

Asahi/america, Inc.

Forward Citations = 307

11 inventors:

goldMedal Leo M Lester (4 out of 4 patents)

silverMedal Christopher G Ziu (3 out of 3 patents)

bronzeMedal Lars O Rosaen (2 out of 29 patents)

4.  Eric J Rosaen (2 out of 2 patents)

5.  David Winsor Marsh (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Asahi/america, Inc.. Retrieved from https://idiyas.com/company/asahi-america

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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