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For the Inventor, By the Inventor

Minneapolis, MN, United States of America

Recovery Engineering, Inc.


USPTO Granted Patents = 23

Trademarks = 2

Forward Citations = 1,125

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19 inventors (with patents filed for the assignee):

goldMedal Richard D Hembree (12 out of 13 patents)

silverMedal David James Emmons (9 out of 118 patents)

bronzeMedal James L Lund (5 out of 7 patents)

4.  John D Tanner (5 out of 20 patents)

5.  David E Carmein (4 out of 8 patents)

6.  Brian F Sullivan (4 out of 4 patents)

7.  Jeffrey A Weber (3 out of 42 patents)

8.  Johannes N Gaston (2 out of 47 patents)

9.  Shaohui Qiu (2 out of 15 patents)

10.  William E Stumpf (2 out of 48 patents)

11.  Brian D Gale (2 out of 2 patents)

12.  Eric J Mueller (2 out of 8 patents)

13.  Timothy Jordan Prescott (2 out of 2 patents)

14.  Paul D Rothstein (2 out of 3 patents)

15.  Alan L Carlson (2 out of 2 patents)


23 patents:

1. 6241103 - Filter cartridge for water treatment device (2001-06-05),
2. D440110 - Water purification pitcher (2001-04-11),
3. D438592 - Faucet-mounted water treatment device (2001-03-07),
4. 6103114 - Pour-through water treatment carafe (2000-08-15),
5. 5928504 - Faucet-mounted water treatment device (1999-07-27),
6. 5882507 - Water filter cartridge end-of-life mechanism (1999-03-16),
7. D406003 - Water purification pitcher (1999-02-23),
8. 5785844 - End of life mechanism for water treatment cartridge (1998-07-28),
9. 5709794 - Low-cost portable water filter (1998-01-20),
10. D386041 - Water purification pitcher (1997-11-11),
11. D377515 - Water filter cartridge (1997-01-21),
12. D377388 - Water purifier (1997-01-14),
13. 5536394 - End of life mechanism for water treatment cartridge (1996-07-16),
14. 5527451 - Water treatment device with volume totalization valve (1996-06-18),
15. 5525214 - Filter cartridge for water treatment device (1996-06-11),
Company Overview
Recovery Engineering, Inc. is a Minneapolis-based company specializing in advanced water treatment technologies. The organization focuses on developing innovative solutions for water purification and recovery, addressing both industrial and municipal needs. Their expertise encompasses various aspects of water management, including filtration and separation processes, aimed at enhancing sustainability and efficiency in water usage. Recovery Engineering is committed to providing effective and environmentally friendly solutions to improve water quality and availability.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

23 Patents

#82 in Minneapolis, MN

#423 in Minnesota

#14,415 in US

#27,649 in the World

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

Recovery Engineering, Inc.

Forward Citations = 1,125

19 inventors:

goldMedal Richard D Hembree (12 out of 13 patents)

silverMedal David James Emmons (9 out of 118 patents)

bronzeMedal James L Lund (5 out of 7 patents)

4.  John D Tanner (5 out of 20 patents)

5.  David E Carmein (4 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Recovery Engineering, Inc.. Retrieved from https://idiyas.com/company/recovery-engineering

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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