Inventor
UMEHARA MASAYUKI
JP6 patents
Patents
6 patentsUS6557379B1May 6, 2003
Method of producing an arc tube
KOITO MFG CO LTD19 citations83
US6215236B1Apr 10, 2001
Halogen lamp having thick wall pinch seal portion
KOITO MFG CO LTD16 citations82
US6528931B1Mar 4, 2003
Electric light bulb with base held by positioning ring having elastic pieces and weld pieces
KOITO MFG CO LTD13 citations80
US5994825ANov 30, 1999
Electric lamp with a base
KOITO MFG CO LTD11 citations72
US6843698B2Jan 18, 2005
Arc tube and method of producing the same
KOITO MFG CO LTD0 citations47
US6653785B2Nov 25, 2003
Arc tube with pinch seal and dimensional relationship and method for forming the same
KOITO MFG CO LTD1 citations47