Inventor
KATAYAMA SHITOMI
15 patents
⚠️ This page may combine multiple inventors who share the name “KATAYAMA SHITOMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NHK SPRING CO LTD
9 patentsUS4341841AJul 27, 1982
Multi-layer coating protective film form
NHK SPRING CO LTD55 citations94
US4340646AJul 20, 1982
Multi-layer reflectors
NHK SPRING CO LTD42 citations91
US4358507ANov 9, 1982
Multi-layer reflectors
NHK SPRING CO LTD44 citations90
US4457587AJul 3, 1984
Reflector and method for manufacturing the same
NHK SPRING CO LTD26 citations81
US4457598AJul 3, 1984
Reflector and method for manufacturing the same
NHK SPRING CO LTD23 citations81
US4364637ADec 21, 1982
Highly reflective plastic reflector with crystalline inorganic film coating
NHK SPRING CO LTD19 citations81
US4431268AFeb 14, 1984
Reflector and method for manufacturing the same
NHK SPRING CO LTD15 citations72
US4136079AJan 23, 1979
Urea compound having carboxylate radical and method for producing the same
NHK SPRING CO LTD6 citations57
US4156675AMay 29, 1979
Urea polymer containing a sulfonate radical and method of preparing the same by a polymerization reaction of diaminosulfonate with diisocyanate
NHK SPRING CO LTD3 citations53