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For the Inventor, By the Inventor

Eastlake, OH, United States of America

Enpress LLC


USPTO Granted Patents = 17



Trademarks = 10

Forward Citations = 135

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8 inventors (with patents filed for the assignee):

goldMedal Douglas M Horner (14 out of 26 patents)

silverMedal Douglas S Stolarik (11 out of 14 patents)

bronzeMedal Michael P Mormino (11 out of 14 patents)

4.  Robert John Pristas (4 out of 5 patents)

5.  Richard A Mest (4 out of 4 patents)

6.  Thomas G Carter (3 out of 10 patents)

7.  James R Cooney (1 out of 1 patent)

8.  Justin Fink (1 out of 1 patent)


17 patents:

1. 12203663 - Composite diaphragm expansion vessels (2025-01-21),
2. 11821545 - Convertible head for deionization vessels (2023-11-21),
3. 11428367 - Biaxially oriented blow-molded pressure vessels (2022-08-30),
4. 11426686 - Fluid filter with under-cap metered fluid shut off assembly (2022-08-30),
5. 10183245 - Water filtration system and water filtration system housing with closing assembly (2019-01-22),
6. 9815010 - Water filtration system and water filtration system housing with closing assembly (2017-11-14),
7. 9180391 - Water filtration system and water filtration system housing with closing assembly (2015-11-10),
8. 8486264 - Housing for reverse osmosis filter cartridge and method of forming same (2013-07-16),
9. 8382994 - Method of preparing a composite pressure vessel for use as a water treatment apparatus (2013-02-26),
10. 8377298 - Housing for reverse osmosis filter cartridge and method of forming same (2013-02-19),
11. 8110103 - Flow-control supports for distributor plates in composite pressure vessel assemblies (2012-02-07),
12. 7963400 - Distributor plate for a composite pressure vessel (2011-06-21),
13. 7901576 - Composite water treatment vessel including liquid distributor plates (2011-03-08),
14. 7810670 - Composite pressure vessel assembly (2010-10-12),
15. D591823 - Distributor plate for a pressure vessel (2009-05-05),
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USPTO Data Jan 1 1976 - Dec 9 2025

17 Patents

#7 in Eastlake, OH

#765 in Ohio

#18,300 in US

#34,819 in the World

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Eastlake, OH, United States of America

Enpress LLC

Forward Citations = 135

8 inventors:

goldMedal Douglas M Horner (14 out of 26 patents)

silverMedal Douglas S Stolarik (11 out of 14 patents)

bronzeMedal Michael P Mormino (11 out of 14 patents)

4.  Robert John Pristas (4 out of 5 patents)

5.  Richard A Mest (4 out of 4 patents)

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