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For the Inventor, By the Inventor

Saline, MI, United States of America

Davco Manufacturing L.l.c.

Calculating rank
USPTO Granted Patents = 20

Trademarks = 5

Forward Citations = 308

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8 inventors (with patents filed for the assignee):

goldMedal Leland L Davis (13 out of 19 patents)

silverMedal Stephen D Davis (4 out of 4 patents)

bronzeMedal Paul B Smith (3 out of 8 patents)

4.  Willis E Tupper (2 out of 7 patents)

5.  Kevin John Rucinski (1 out of 10 patents)

6.  Alfred Tondreau (1 out of 8 patents)

7.  Ken Conti (1 out of 6 patents)

8.  Marc Clark (1 out of 1 patent)


20 patents:

1. 6841065 - Fluid filter with pressure relief valve (2005-01-11),
2. RE37165 - Fuel filter assembly (2001-05-08),
3. D408419 - Fuel line connector (1999-04-20),
4. 5832902 - Fuel temperature control bypass circuit (1998-11-10),
5. 5766449 - Fuel filter assembly (1998-06-16),
6. 5535724 - Fuel pulsation dampener (1996-07-16),
7. 5507942 - Fuel filter assembly (1996-04-16),
8. 5372116 - Combined pressure wave suppressor air/vapor purge and check valve (1994-12-13),
9. 5307782 - Combined pressure wave suppressor, air/vapor purge and check valve (1994-05-03),
10. 5307770 - Priming pump valve (1994-05-03),
11. 5256040 - Priming pump valve (1993-10-26),
12. 4883943 - Electric heater for fuel tank discharge opening coupling to prevent fuel (1989-11-28),
13. 4807584 - Fuel tank heating system (1989-02-28),
14. 4706636 - Purge and prime fuel delivery system and method (1987-11-17),
15. 4680110 - Filter block mounted fuel processor apparatus (1987-07-14),
Company Overview
Davco Manufacturing L.L.C., based in Saline, Michigan, specializes in precision manufacturing and engineering solutions. The company focuses on providing high-quality components and assemblies for various industries, including automotive and aerospace. With a commitment to innovation, Davco integrates advanced technologies and processes to enhance product performance and reliability. The organization is dedicated to meeting the evolving needs of its clients through tailored solutions and a strong emphasis on quality assurance.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

20 Patents

#7 in Saline, MI

#591 in Michigan

#16,444 in US

#31,380 in the World

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

Davco Manufacturing L.l.c.

Forward Citations = 308

8 inventors:

goldMedal Leland L Davis (13 out of 19 patents)

silverMedal Stephen D Davis (4 out of 4 patents)

bronzeMedal Paul B Smith (3 out of 8 patents)

4.  Willis E Tupper (2 out of 7 patents)

5.  Kevin John Rucinski (1 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Davco Manufacturing L.l.c.. Retrieved from https://idiyas.com/company/davco-manufacturing

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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