Sato; Yasuji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Sato; Yasuji.The latest application filed is for "talker speech level control circuit for telephone transmitter by piezoelectric conversion".

Company Profile

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Sato; Yasuji - Hachioji JP
Sato; Yasuji - Tokyo JP
Sato; Yasuji - Hachiouji JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Talker speech level control circuit for telephone transmitter by piezoelectric conversion Grant 5,048,091 - Sato , et al. September 10, 1	1991-09-10
System allowing selective connection of various types of external apparatuses to telephone set Grant 4,893,331 - Horiuchi , et al. January 9, 1	1990-01-09
Communication system using unbalanced communication paths Grant 4,815,127 - Sato , et al. March 21, 1	1989-03-21
Automatic gain control in a loudspeaker telephone set Grant 4,764,954 - Tsurusaki , et al. August 16, 1	1988-08-16
Latching relay drive circuit for use in telephone sets Grant 4,645,882 - Nakayama , et al. February 24, 1	1987-02-24
Telephone apparatus for selective operation in a normal and repertory dial mode Grant 4,567,326 - Sato , et al. January 28, 1	1986-01-28
Terminal interface connecting terminal unit having central office line interface to key telephone system Grant 4,564,724 - Nakayama , et al. January 14, 1	1986-01-14
Telephone apparatus capable of inputting character data Grant 4,532,378 - Nakayama , et al. July 30, 1	1985-07-30
Telephonic display device Grant 4,511,764 - Nakayama , et al. April 16, 1	1985-04-16
Key telephone system and method of setting operating data in the key telephone system Grant 4,491,693 - Sano , et al. January 1, 1	1985-01-01

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