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Trademarks = 2

Forward Citations = 208

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4 inventors (with patents filed for the assignee):

Harold R White (16 out of 19 patents)

Alex J Doncer (6 out of 6 patents)

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

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

18 patents: Sort by Forward Citations

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),

Alar Engineering Corporation is a leading manufacturer of industrial wastewater treatment equipment. With over 40 years of experience, we provide innovative solutions for liquid/solid separation and dewatering. Our products include belt filter presses, gravity belt thickeners, and polymer blending systems. We serve various industries such as food processing, chemical, and municipal wastewater treatment.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

18 Patents

#3 in Mokena, IL

#877 in Illinois

#17,383 in US

#33,165 in the World

Mokena, IL, United States of America

Alar Engineering Corporation

Forward Citations = 208

4 inventors:

Harold R White (16 out of 19 patents)

Alex J Doncer (6 out of 6 patents)

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

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

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