Heitaro Nakajima

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for adding 1/f fluctuation to an audio signal
- Patent number 6,344,940
- Issue date Feb 5, 2002
- Sony Corporation
- Yoichiro Sako
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for preventing data copying from a disk using...
- Patent number 5,832,088
- Issue date Nov 3, 1998
- Sony Corporation
- Heitaro Nakajima
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Recordable optical disc storage device with limited storage capacit...
- Patent number 5,111,442
- Issue date May 5, 1992
- Sony Corporation
- Heitaro Nakajima
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording in a single track visual signals associated with audio si...
- Patent number 4,445,150
- Issue date Apr 24, 1984
- Sony Corporation
- Heitaro Nakajima
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Tone arm assembly
- Patent number 4,138,121
- Issue date Feb 6, 1979
- Sony Corporation
- Heitaro Nakajima
- G11 - INFORMATION STORAGE