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Cambridge Filter Corporation

USPTO Granted Patents = 15

EPO Patents = 1

Trademarks = 11

Forward Citations = 250

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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 advanced filtration solutions, focusing on air and liquid filtration technologies. The company is dedicated to developing innovative products that enhance environmental quality and improve health outcomes across various industries. With a strong emphasis on research and development, Cambridge Filter Corporation aims to address complex filtration challenges, providing effective solutions for applications in sectors such as healthcare, industrial processes, and environmental management. Headquartered in Tokyo, the company leverages its expertise to serve a global market.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

15 Patents

#1,540 in Tokyo

#3,442 in Japan

#39,881 in the World

Cambridge Filter Corporation

Forward Citations = 250

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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