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USPTO Patent Rankings Data through Dec 31, 2025
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Eri Murata — 9 Patents

Nec: 9 patents #1,544 of 14,502Top 15%
Tokyo, JP: #17,063 of 90,295 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Eri Murata has been granted 9 US patents while listed as an inventor at Nec. The first was granted in 1993 and the most recent in May 2002. Eri Murata ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Eri Murata in Tokyo, JP.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6393058 Moving picture coding system having a quantizer controlled in accordance with amount of motion between successsive frames 2002-05-21 $15,000
6119140 Two-dimensional inverse discrete cosine transform circuit and microprocessor realizing the same and method of implementing 8.times.8 two-dimensional inverse discrete cosine transform Ichiro Kuroda 2000-09-12 $74,000
5964824 Two-dimensional IDCT circuit with input adder out output shifter for reducing addition operations during rounding-up Ichiro Kuroda 1999-10-12 $47,000
5917736 Two-dimensional inverse-discrete cosine transform circuit Ichiro Kuroda 1999-06-29 $19,000
5721589 Moving picture coding apparatus which calculates an optimum quantization step size using the relationship between the quantization step size and a generated bit amount 1998-02-24 $23,000
5515114 Motion-vector detection apparatus for a video signal 1996-05-07 $23,000
5396292 Encoding apparatus for motion video signals 1995-03-07 $17,000
5258836 Encoding of motion picture signal 1993-11-02 $41,000
5177608 Method and apparatus for coding moving image signal Junichi Ohki 1993-01-05 $28,000