Forward Citations = 253

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6 inventors (with patents filed for the assignee):

Barry Clifton Williams (3 out of 7 patents)

Roland Thomann (3 out of 6 patents)

Markus Amann (3 out of 3 patents)

4. Heinz Witschi (1 out of 2 patents)

5. Larry E Kirkpatrick (1 out of 1 patent)

6. Heinz-Dieter Brink (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 4751945 - Dual containment channel for fluids (1988-06-21),

2. 4640643 - Sidewall extension for drain channel system and method for extending the (1987-02-03),

3. 4621939 - Drainage channel (1986-11-11),

4. 4553874 - Slotted drainage grate with support (1985-11-19),

5. 4515498 - Slotted drainage grate with support (1985-05-07),

6. 4498807 - Drainage channel with means for maintaining proper slope during (1985-02-12),

Company Overview

Polydrain, Inc. specializes in designing and manufacturing high-quality polymer concrete drainage solutions for a wide range of applications. With a focus on durability and efficiency, Polydrain products are used in commercial, industrial, and residential settings to effectively manage water runoff and protect infrastructure. The company's innovative designs and commitment to customer satisfaction have established Polydrain as a trusted leader in the industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#3 in Troutman, NC

#981 in North Carolina

#44,981 in US

Troutman, NC, United States of America

Polydrain, Inc.

Forward Citations = 253

6 inventors:

Barry Clifton Williams (3 out of 7 patents)

Roland Thomann (3 out of 6 patents)

Markus Amann (3 out of 3 patents)

4. Heinz Witschi (1 out of 2 patents)

5. Larry E Kirkpatrick (1 out of 1 patent)

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

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]