% Expired Patents = 25.0

Trademarks = 2

Forward Citations = 14

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4 inventors (with patents filed for the assignee):

Kingsley S Evarts (1 out of 6 patents)

Otto W Kammerer (1 out of 1 patent)

Steven L Sahajdak (1 out of 1 patent)

4. Robert C Tyer (1 out of 9 patents)

4 patents: Sort by Forward Citations

1. 7704017 - Friction shaft coupling with perpendicular adjustment (2010-04-27),

2. 7686098 - Chain driven reciprocating hammer with work piece centering and clamping (2010-03-30),

3. 4277676 - Apparatus for measuring the fall height of a pile driver ram (1981-07-07),

4. 4271475 - Apparatus for measuring the fall height of a pile driver ram (1981-06-02),

Company Overview

Pileco Inc. is a leading manufacturer of pile driving equipment for the construction industry. With over 50 years of experience, Pileco offers a wide range of products including hydraulic pile hammers, vibratory drivers, and diesel hammers. Their innovative solutions provide efficient and cost-effective solutions for driving all types of piles in various soil conditions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#1,003 in Houston, TX

#3,939 in Texas

#60,671 in US

Houston, TX, United States of America

Pileco Inc.

Forward Citations = 14

4 inventors:

Kingsley S Evarts (1 out of 6 patents)

Otto W Kammerer (1 out of 1 patent)

Steven L Sahajdak (1 out of 1 patent)

4. Robert C Tyer (1 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pileco Inc.. Retrieved from https://idiyas.com/company/pileco

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]