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Cambridge Filter Corporation

USPTO Granted Patents = 15

EPO Patents = 1

Trademarks = 16

Forward Citations = 248

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20 inventors (with patents filed for the assignee):

Roger T Goulet (4 out of 5 patents)

Toshiro Kisakibaru (2 out of 11 patents)

Stephen M Hladik (2 out of 2 patents)

4. Jerry R Ellis (2 out of 2 patents)

5. Peter J Gualtieri (2 out of 3 patents)

6. Kouta Ueno (1 out of 2 patents)

7. Akira Yamazaki (1 out of 126 patents)

8. Isao Honbori (1 out of 6 patents)

9. Carl J Bauder (1 out of 1 patent)

10. Robert W Noll (1 out of 4 patents)

11. Stanley J Wasielewski (1 out of 1 patent)

12. John A Taddeo (1 out of 1 patent)

13. Richard W Elbers (1 out of 1 patent)

14. Allen H Mattison (1 out of 1 patent)

15. John Taddeo (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 11765810 - Soft X-ray static electricity removal apparatus (2023-09-19),

2. 11480352 - Device for measuring clogging of filter in air conditioner and air conditioner (2022-10-25),

3. 4885015 - HEPA air filter for high temperature environments and method of (1989-12-05),

4. 4795481 - Air filter with high dust-holding capacity (1989-01-03),

5. 4768386 - Air pressure measurement element and system incorporating same (1988-09-06),

6. 4646558 - Method for leak testing air filters (1987-03-03),

7. 4600419 - High efficiency, down flow air filter sealing and support system (1986-07-15),

8. 4548068 - Downflow air filter construction and methods for air flow adjustment and (1985-10-22),

9. 4537812 - Corrugated spacers for pleated air filter media (1985-08-27),

10. 4308041 - Air filter cartridge (1981-12-29),

11. 4227953 - Method of fabricating air filters (1980-10-14),

12. 4199387 - Air filter fabrication method (1980-04-22),

13. 4036054 - Fluid pressure sensing apparatus (1977-07-19),

14. 4030358 - Portable air velocity measuring unit (1977-06-21),

15. 3981192 - Fluid pressure sensing apparatus (1976-09-21),

Cambridge Filter Corporation specializes in providing high-quality air filtration solutions for a wide range of industries. With over 20 years of experience, we offer a comprehensive selection of filters for HVAC systems, cleanrooms, industrial processes, and more. Our team of experts is dedicated to delivering superior products and exceptional customer service to ensure optimal air quality and performance for our clients.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

15 Patents

#1,346 in Tokyo

#3,371 in Japan

#38,730 in the World

Cambridge Filter Corporation

Forward Citations = 248

20 inventors:

Roger T Goulet (4 out of 5 patents)

Toshiro Kisakibaru (2 out of 11 patents)

Stephen M Hladik (2 out of 2 patents)

4. Jerry R Ellis (2 out of 2 patents)

5. Peter J Gualtieri (2 out of 3 patents)

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