Inventor · disambiguated record
Masayuki Tsurusaki
Also filed as: TSURUSAKI MASAYUKI
14 granted patents·187 citations·filing 1986–2001
92Inventor score
Top patents by PatentIndex Score
14 records- 0196US6496576B2Digital key telephone system and extension terminal device thereofTOSHIBA KK·Filed 2001·Granted Dec 17, 2002·103 cites·4 claims
- 0268US6263061B1Digital button telephone system and extension terminal for the sameTOKYO SHIBAURA ELECTRIC CO·Filed 1997·Granted Jul 17, 2001·23 cites·11 claims
- 0366US6633631B2Digital key telephone system and extension terminal device thereofTOSHIBA KK·Filed 2001·Granted Oct 14, 2003·4 cites·3 claims
- 0462US6373924B2Digital key telephone system and extension terminal device thereofTOSHIBA KK·Filed 2001·Granted Apr 16, 2002·3 cites·1 claims
- 0561US4764954AAutomatic gain control in a loudspeaker telephone setTOSHIBA KK·Filed 1986·Granted Aug 16, 1988·21 cites·1 claims
- 0658US6456705B1Digital key telephone system and extension terminal device thereofTOSHIBA KK·Filed 2001·Granted Sep 24, 2002·3 cites·2 claims
- 0758US6408060B2Digital key telephone system and extension terminal device thereofTOSHIBA KK·Filed 2001·Granted Jun 18, 2002·2 cites·6 claims
- 0844US6377671B2Digital key telephone system and extension terminal device thereofTOSHIBA KK·Filed 2001·Granted Apr 23, 2002·0 cites·1 claims
- 0941US5105461ATelephone line interface circuitTOSHIBA KK·Filed 1990·Granted Apr 14, 1992·11 cites·5 claims
- 1041US5040172ACommunication method utilizing channel highway and digital communication apparatus for realizing the sameTOSHIBA KK·Filed 1990·Granted Aug 13, 1991·11 cites·8 claims
- 1134US4887264ADigital key telephone systemTOSHIBA KK·Filed 1988·Granted Dec 12, 1989·3 cites·10 claims
- 1231US4852158ATelephone system allowing hold releasing request from central office lineTOSHIBA KK·Filed 1988·Granted Jul 25, 1989·2 cites·9 claims
- 1330US5335270ABell signal generating circuitTOSHIBA KK·Filed 1993·Granted Aug 2, 1994·0 cites·3 claims
- 1429US5033081AKey telephone systemTOSHIBA KK·Filed 1990·Granted Jul 16, 1991·1 cites·4 claims
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