Roberts Filter Manufacturing Company

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USPTO Granted Patents = 11

Forward Citations = 223

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6 inventors (with patents filed for the assignee):

R Lee Roberts (7 out of 65 patents)

Douglas H Eden (4 out of 5 patents)

Robert L Roberts (4 out of 9 patents)

4. Annabelle Kim (3 out of 3 patents)

5. Donald J MacKay (1 out of 1 patent)

6. Andrew S Taylor (1 out of 2 patents)

11 patents: Sort by Forward Citations

1. 5534202 - Air grid for underdrains and similar systems (1996-07-09),

2. 5413710 - Lateral underdrain (1995-05-09),

3. 5314630 - Systems and methods for clarifying liquids (1994-05-24),

4. 5198124 - Upflow filter and method of washing same (1993-03-30),

5. 5127582 - Nozzles for rotary agitators (1992-07-07),

6. 5080808 - Method of washing an upflow filter and filter bed employed in said filter (1992-01-14),

7. 5061080 - Rotary agitator (1991-10-29),

8. 4750999 - Filter employing barrier (1988-06-14),

9. 4619765 - Filter bottom construction (1986-10-28),

10. 4364830 - Filter bottom (1982-12-21),

11. 4177147 - Biological treating systems (1979-12-04),

Company Overview

Roberts Filter Manufacturing Company, based in Darby, PA, specializes in the design and production of advanced filtration systems. The company focuses on providing innovative solutions for various industries, including water treatment, industrial processes, and environmental applications. With a commitment to quality and efficiency, Roberts Filter develops technologies that enhance filtration performance and sustainability, addressing the growing demand for effective filtration solutions in both commercial and industrial sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

11 Patents

#1 in Darby, PA

#995 in Pennsylvania

#27,540 in US

#51,831 in the World

Darby, PA, United States of America