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Rfstream Corporation

USPTO Granted Patents = 14

% Expired Patents = 100.0

Forward Citations = 136

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8 inventors (with patents filed for the assignee):

Takatsugu Kamata (12 out of 13 patents)

Kimitake Utsunomiya (6 out of 8 patents)

Kazunori Okui (5 out of 7 patents)

4. Hiroshi Ogasawara (2 out of 43 patents)

5. Christopher Li (1 out of 3 patents)

6. Keiichi Fujii (1 out of 5 patents)

7. Lance Wong (1 out of 3 patents)

8. Hideyuki Kurita (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 7446631 - Radio frequency inductive-capacitive filter circuit topology (2008-11-04),

2. 7359693 - Enclosure and substrate structure for a tuner module (2008-04-15),

3. 7358795 - MOSFET temperature compensation current source (2008-04-15),

4. 7333155 - Quadratic video demodulation with baseband nyquist filter (2008-02-19),

5. 7327406 - Methods and apparatus for implementing a receiver on a monolithic integrated circuit (2008-02-05),

6. 7199844 - Quadratic nyquist slope filter (2007-04-03),

7. 7183880 - Discrete inductor bank and LC filter (2007-02-27),

8. 7116961 - Image rejection quadratic filter (2006-10-03),

9. 7102465 - Frequency discrete LC filter bank (2006-09-05),

10. 7088202 - Methods and apparatus for an improved discrete LC filter (2006-08-08),

11. 7005323 - Method and apparatus for shielding integrated circuits (2006-02-28),

12. 6954115 - Methods and apparatus for tuning successive approximation (2005-10-11),

13. 6940365 - Methods and apparatus for an improved discrete LC filter (2005-09-06),

14. 6882245 - Frequency discrete LC filter bank (2005-04-19),

RfStream Corporation is a leading provider of advanced wireless communication solutions. We specialize in developing cutting-edge technology to enhance wireless connectivity and optimize network performance. With a team of highly skilled engineers and industry experts, we deliver innovative solutions that cater to the unique requirements of various industries such as telecommunications, IoT, transportation, and public safety. Our comprehensive product portfolio includes state-of-the-art wireless network equipment, antennas, signal boosters, and software applications. Through our unwavering commitment to quality, reliability, and customer satisfaction, we have established ourselves as a trusted partner for businesses seeking superior wireless communication solutions.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

14 Patents

#385 in Osaka

#3,573 in Japan

#42,168 in the World

Rfstream Corporation

Forward Citations = 136

8 inventors:

Takatsugu Kamata (12 out of 13 patents)

Kimitake Utsunomiya (6 out of 8 patents)

Kazunori Okui (5 out of 7 patents)

4. Hiroshi Ogasawara (2 out of 43 patents)

5. Christopher Li (1 out of 3 patents)

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