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For the Inventor, By the Inventor

Troy, MI, United States of America

American Sunroof Corporation


USPTO Granted Patents = 16

% Expired Patents = 6.3

Forward Citations = 193

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19 inventors (with patents filed for the assignee):

goldMedal Milton C Kaltz (7 out of 14 patents)

silverMedal Heinz C Prechter (3 out of 3 patents)

bronzeMedal David C Garascia (3 out of 4 patents)

4.  Richard D George (3 out of 4 patents)

5.  Michael P Alexander (2 out of 23 patents)

6.  Barney J Bauer (2 out of 2 patents)

7.  Edward M Chojnowski (2 out of 2 patents)

8.  Dmitri Chevtsov (1 out of 1 patent)

9.  William A Sims (1 out of 8 patents)

10.  Hal Green (1 out of 4 patents)

11.  Milton C Kalitz (1 out of 1 patent)

12.  Norman L Sorensen (1 out of 11 patents)

13.  Michael T Alexander (1 out of 1 patent)

14.  Dennis F Welch (1 out of 1 patent)

15.  Gary L VanHulle (1 out of 2 patents)


16 patents:

1. 7172236 - Targa roof system with a buttress (2007-02-06),
2. 4493506 - Vehicle rocker panel structure (1985-01-15),
3. 4466657 - Lifter apparatus for pivotal-sliding roof panel assembly (1984-08-21),
4. 4422687 - Sliding roof panel assembly (1983-12-27),
5. 4422686 - Vehicle roof structure (1983-12-27),
6. 4420184 - Pivotal-sliding roof panel apparatus (1983-12-13),
7. 4402536 - Sunroof latching mechanism (1983-09-06),
8. 4379586 - Sliding roof panel assembly (1983-04-12),
9. 4279441 - Air deflector and pivotable roof vent panel apparatus for vehicle roofs (1981-07-21),
10. 4252366 - Movable roof panel structure (1981-02-24),
11. 4223943 - Positioning device for removable vehicle roof panels (1980-09-23),
12. 4206927 - Gasket for vehicle lamp (1980-06-10),
13. 4185868 - Electrically operated hatch roofs (1980-01-29),
14. 4178036 - Positive lock mechanism for vehicular sliding roof panels (1979-12-11),
15. 4154473 - Vehicle roof structure kit (1979-05-15),
Company Overview
American Sunroof Corporation, headquartered in Troy, Michigan, specializes in the design and manufacturing of innovative sunroof systems and related automotive components. The company focuses on enhancing vehicle aesthetics and functionality through advanced engineering and technology. With a commitment to quality and performance, American Sunroof Corporation serves a diverse range of automotive clients, contributing to the evolution of vehicle design and user experience in the automotive industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

16 Patents

#64 in Troy, MI

#713 in Michigan

#19,907 in US

#37,788 in the World

Troy, MI (US)
Troy, MI, United States of America

American Sunroof Corporation

Forward Citations = 193

19 inventors:

goldMedal Milton C Kaltz (7 out of 14 patents)

silverMedal Heinz C Prechter (3 out of 3 patents)

bronzeMedal David C Garascia (3 out of 4 patents)

4.  Richard D George (3 out of 4 patents)

5.  Michael P Alexander (2 out of 23 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: American Sunroof Corporation. Retrieved from https://idiyas.com/company/american-sunroof

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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