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Forward Citations = 172

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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!

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USPTO Data Jan 1 1976 - Dec 9 2025

11 Patents

#9 in Oakland, NJ

#1,020 in New Jersey

#26,680 in US

#50,159 in the World

Oakland, NJ, United States of America

Willinger Brothers, Inc.