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For the Inventor, By the Inventor

Owatonna, MN, United States of America

Truth Hardware Corporation


USPTO Granted Patents = 146

% Expired Patents = 8.9



Trademarks = 24

Forward Citations = 2,426

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76 inventors (with patents filed for the assignee):

goldMedal Gregory J Vetter (39 out of 60 patents)

silverMedal Brian D Dallmann (18 out of 20 patents)

bronzeMedal Douglas A Nolte (13 out of 20 patents)

4.  Glen M Wolf (12 out of 12 patents)

5.  Sherry Lynn Jones (11 out of 153 patents)

6.  Stephen M Piltingsrud (9 out of 12 patents)

7.  Douglas G Johnson (8 out of 8 patents)

8.  Leonard P Bauman (7 out of 8 patents)

9.  Joseph P Landherr (7 out of 8 patents)

10.  Perry L Virkler (7 out of 7 patents)

11.  Craig M Doring (6 out of 6 patents)

12.  Yoshikazu Nakanishi (6 out of 11 patents)

13.  Derek Ronald Gramstad (6 out of 7 patents)

14.  Manabu Shimoji (6 out of 6 patents)

15.  Todd A Anderson (6 out of 6 patents)


Core Competencies:
Window Lock
Casement Operator
Multi-Point Lock
Tie Bar
Sliding Door
Sash Lock
Patio Door Handle
Locking Bolt
Hinge
Opening Control Device
Limit Device
Handle Cover

146 patents:

1. 12442228 - Flex drive tie-bar window lock system (2025-10-14),
2. 12163361 - Roll-form tie bar and guide for casement window (2024-12-10),
3. D1031413 - Window operator handle and cover (2024-06-18),
4. 11946305 - Window operator handle and cover with magnetic securing features and detent (2024-04-02),
5. 11927044 - Window operator handle and cover with magnetic securing features (2024-03-12),
6. 11866968 - Tie bar and guide for casement window (2024-01-09),
7. 11692381 - Tamper resistant sash opening limiter for casement and awning windows (2023-07-04),
8. D930465 - Casement window operator cover and folding handle (2021-09-14),
9. D913783 - Casement window operator cover and handle (2021-03-23),
10. 10787853 - Integrated casement window operator and lock with anti-backdrive feature (2020-09-29),
11. 10648207 - Opening control device for casement window (2020-05-12),
12. D874901 - Casement window operator handle and cover (2020-02-11),
13. 10557295 - Self locating tie bar guide for sash lock tie bars (2020-02-11),
14. D866289 - Patio door handle (2019-11-12),
15. 10392839 - Locking bolt with surface-mounted transmission (2019-08-27),
Company Overview
Truth Hardware Corporation, based in Owatonna, Minnesota, specializes in the development and manufacturing of innovative window lock mechanisms and related hardware solutions. The company focuses on enhancing security and functionality in residential and commercial window systems through its advanced technologies, including casement operators, multi-point locks, and sliding door hardware. With a commitment to quality and performance, Truth Hardware serves a diverse range of clients in the building and construction industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Truth Hardware Corporation USPTO Patent Assignee Logo
146 Patents

#2 in Owatonna, MN

#63 in Minnesota

#2,682 in US

#5,581 in the World

Owatonna, MN (US)
Owatonna, MN, United States of America

Truth Hardware Corporation

Forward Citations = 2,426

76 inventors:

goldMedal Gregory J Vetter (39 out of 60 patents)

silverMedal Brian D Dallmann (18 out of 20 patents)

bronzeMedal Douglas A Nolte (13 out of 20 patents)

4.  Glen M Wolf (12 out of 12 patents)

5.  Sherry Lynn Jones (11 out of 153 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Truth Hardware Corporation. Retrieved from https://idiyas.com/company/truth-hardware

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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