Inventor · disambiguated record
Masafuku Akatsu
Also filed as: AKATSU MASAFUKU
21 granted patents·375 citations·filing 1983–2011
96Inventor score
Technology areasH04M
Top patents by PatentIndex Score
21 records- 0191USD284079STelephone instrumentNEC CORP·Filed 1983·Granted Jun 3, 1986·33 cites·1 claims
- 0286USD596612STelephoneNEC INFRONTIA CORP·Filed 2007·Granted Jul 21, 2009·29 cites·1 claims
- 0386USD342252STelephone setNEC CORP·Filed 1992·Granted Dec 14, 1993·29 cites·1 claims
- 0486USD298939SKey telephone set with speakerphone and visual display panelNEC CORP·Filed 1987·Granted Dec 13, 1988·25 cites·1 claims
- 0583USD345557STelephone setNEC CORP·Filed 1992·Granted Mar 29, 1994·25 cites·1 claims
- 0680USD600670STelephoneNEC INFRONTIA CORP·Filed 2009·Granted Sep 22, 2009·21 cites·1 claims
- 0780USD597061STelephoneNEC INFRONTIA CORP·Filed 2007·Granted Jul 28, 2009·26 cites·1 claims
- 0879USD601119STelephoneNEC INFRONTIA CORP·Filed 2009·Granted Sep 29, 2009·17 cites·1 claims
- 0979USD457870STelephone with the display screenNEC CORP·Filed 2001·Granted May 28, 2002·26 cites·1 claims
- 1078USD600671STelephoneNEC INFRONTIA CORP·Filed 2009·Granted Sep 22, 2009·16 cites·1 claims
- 1177USD300926SKey telephone setNEC CORP·Filed 1987·Granted May 2, 1989·17 cites·1 claims
- 1276USD601118STelephoneNEC INFRONTIA CORP·Filed 2009·Granted Sep 29, 2009·15 cites·1 claims
- 1376USD596613STelephoneNEC INFRONTIA CORP·Filed 2007·Granted Jul 21, 2009·15 cites·1 claims
- 1472USD597519SCommunication relay exchange control machineNEC INFRONTIA CORP·Filed 2008·Granted Aug 4, 2009·20 cites·1 claims
- 1562US7519176B2Key telephone set having interchangeable unitsNEC INFRONTIA CORP·Filed 2004·Granted Apr 14, 2009·5 cites·14 claims
- 1661USD621381STelephoneNEC INFRONTIA CORP·Filed 2007·Granted Aug 10, 2010·11 cites·1 claims
- 1760USD597060STelephoneNEC INFRONTIA CORP·Filed 2007·Granted Jul 28, 2009·11 cites·1 claims
- 1859USD390563STelephoneNEC CORP·Filed 1997·Granted Feb 10, 1998·10 cites·1 claims
- 1957USD676016SPortion of a telephoneNEC INFRONTIA CORP·Filed 2011·Granted Feb 12, 2013·9 cites·1 claims
- 2051USD664519STelephoneAKATSU MASAFUKU·Filed 2011·Granted Jul 31, 2012·10 cites·1 claims
- 2148USD298938SKey telephone set with speaker phoneNEC CORP·Filed 1987·Granted Dec 13, 1988·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →