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Forward Citations = 178

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6 inventors (with patents filed for the assignee):

Allan H Willinger (9 out of 63 patents)

Klaus Woltmann (3 out of 37 patents)

Abraham Friedman (1 out of 6 patents)

4. Chen-Chiao Wang (1 out of 1 patent)

5. Robert Ellis (1 out of 7 patents)

6. Jonas Ivasauskas (1 out of 3 patents)

11 patents: Sort by Forward Citations

1. 5034165 - Air stone (1991-07-23),

2. 4997559 - Aquarium filter assembly with restricted pumping window (1991-03-05),

3. 4975562 - Heater and thermostat unit (1990-12-04),

4. D307626 - Aquarium filter cartridge (1990-05-01),

5. 4907772 - Universal clamp for aquarium tank (1990-03-13),

6. 4895646 - External aquarium filter (1990-01-23),

7. 4894151 - Filter cartridge for an undergravel aquarium filter (1990-01-16),

8. 4880549 - Method of filtering in an aquarium tank with a filter envelope (1989-11-14),

9. 4861468 - Rotor impeller assembly (1989-08-29),

10. 4842727 - Aquarium filter (1989-06-27),

11. 4842726 - Inside filter for aquariums (1989-06-27),

Willinger Brothers, Inc. is a family-owned construction company specializing in commercial and residential projects. With over 20 years of experience, we are committed to delivering high-quality work while exceeding our clients' expectations. Our services range from new construction to renovations and remodeling. Contact us today to discuss your next project!

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

11 Patents

#6 in Oakland, NJ

#1,028 in New Jersey

#27,470 in US

#51,671 in the World

Oakland, NJ, United States of America

Willinger Brothers, Inc.