Inventor
NOGAWA MASAFUMI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “NOGAWA MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AISIN SEIKI
8 patentsUS6389819B1May 21, 2002
Pulse tube refrigerator
AISIN SEIKI35 citations92
US6094921AAug 1, 2000
Pulse tube refrigerator
AISIN SEIKI34 citations92
US6308520B1Oct 30, 2001
Multi-type pulse-tube refrigerating system
AISIN SEIKI23 citations89
US6351954B1Mar 5, 2002
Pulse tube refrigerator
AISIN SEIKI19 citations83
US6393845B1May 28, 2002
Pulse tube refrigerator
AISIN SEIKI8 citations73
US6279324B1Aug 28, 2001
Heat-regenerating type cryogenic cooling apparatus
AISIN SEIKI11 citations73
US6196006B1Mar 6, 2001
Pulse tube refrigerator
AISIN SEIKI9 citations73
US6301902B1Oct 16, 2001
Pulse tube refrigerator
AISIN SEIKI6 citations62
NIPPON TELEGRAPH & TELEPHONE
7 patentsUS10243664B2Mar 26, 2019
Optical modulator driver circuit and optical transmitter
NIPPON TELEGRAPH & TELEPHONE5 citations71
US7368954B2May 6, 2008
Phase comparison circuit and CDR circuit
NIPPON TELEGRAPH & TELEPHONE8 citations71
US10892716B2Jan 12, 2021
Amplifier
NIPPON TELEGRAPH & TELEPHONE0 citations58
US9853618B2Dec 26, 2017
Transimpedance amplifier circuit
NIPPON TELEGRAPH & TELEPHONE0 citations51
US10637207B2Apr 28, 2020
Directly modulated laser drive circuit
NIPPON TELEGRAPH & TELEPHONE0 citations50
US10804857B2Oct 13, 2020
Amplifier
NIPPON TELEGRAPH & TELEPHONE0 citations48
US10666212B2May 26, 2020
Driver circuit and optical transmitter
NIPPON TELEGRAPH & TELEPHONE0 citations40