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For the Inventor, By the Inventor

Mokena, IL, United States of America

Alar Engineering Corporation

Calculating rank
USPTO Granted Patents = 18

Trademarks = 2

Forward Citations = 209

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4 inventors (with patents filed for the assignee):

goldMedal Harold R White (16 out of 19 patents)

silverMedal Alex J Doncer (6 out of 6 patents)

bronzeMedal Alexander J Doncer, Jr (3 out of 3 patents)

4.  Alexander J Doncer (1 out of 1 patent)


18 patents:

1. 5802992 - Sludge processor (1998-09-08),
2. 5660124 - Sludge processor (1997-08-26),
3. 5055205 - Pressurized continuous operating rotary drum filter and method (1991-10-08),
4. 4839057 - Water treatment system (1989-06-13),
5. 4742852 - Feeder (1988-05-10),
6. 4681682 - Air flotation clarifier (1987-07-21),
7. 4511468 - Rotary vacuum pre-coat filter apparatus (1985-04-16),
8. 4510061 - Method of filtering (1985-04-09),
9. 4510055 - Filter aid (1985-04-09),
10. 4477939 - Removable sludge cleaner for tanks (1984-10-23),
11. 4476018 - Field assembled clarifier (1984-10-09),
12. 4361488 - Liquid separating and recycling (1982-11-30),
13. 4257900 - Method of clarifying liquids (1981-03-24),
14. 4193871 - Clarifier (1980-03-18),
15. 4083787 - Rotary vacuum filter (1978-04-11),
Company Overview
Alar Engineering Corporation, based in Mokena, Illinois, specializes in the design and manufacturing of advanced engineering solutions. The company focuses on providing innovative products and services primarily in the fields of environmental engineering and industrial process optimization. Alar Engineering is recognized for its expertise in wastewater treatment systems and filtration technologies, catering to a diverse range of industries. Their commitment to quality and sustainability drives their research and development efforts, ensuring effective solutions for modern engineering challenges.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

18 Patents

#3 in Mokena, IL

#918 in Illinois

#18,004 in US

#34,321 in the World

Mokena, IL (US)
Mokena, IL, United States of America

Alar Engineering Corporation

Forward Citations = 209

4 inventors:

goldMedal Harold R White (16 out of 19 patents)

silverMedal Alex J Doncer (6 out of 6 patents)

bronzeMedal Alexander J Doncer, Jr (3 out of 3 patents)

4.  Alexander J Doncer (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Alar Engineering Corporation. Retrieved from https://idiyas.com/company/alar-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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