Family

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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
ASAHI TECHNO GLASS CORPORATION	1-50-1 GOYDA FUNABASHI-SHI CHIBA 273-0044

International Classification(s)

• F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hirano, Naomi	Tokyo, JP	2	6
# of filed Patents : 2 Total Citations : 6
Momoi, Hiroshi	Chiba, JP	12	107
# of filed Patents : 12 Total Citations : 107
Nishio, Hiroyasu	Chiba, JP	2	6
# of filed Patents : 2 Total Citations : 6
Takada, Nobuhisa	Osaka, JP	4	14
# of filed Patents : 4 Total Citations : 14

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Patent Citation Ranking

• 3 Citation Count
• F21V Class

• 2.51 % this patent is cited more than
• 20 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
October 25, 2005	US,6957900,B2   US6957900B2	GRANTED PATENT AS SECOND PUBLICATION
December 30, 2004	US,20040264200,A1   US20040264200A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6957900

Glass reflector for projector and manufacturing method for the same

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Abstract

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For example, the reflector according to the present invention is a reflector made of glass for a projector which is composed of amorphous glass whose thermal expansion coefficient is 30 to 45×10-7/° C. and includes a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to the light source bulb, in which the opening is smoothed by heat-treating the surface thereof after opening-drilling, thus mechanical damage is removed from the processed part.

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Description

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Claims

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Legal Events

 

• STCH2009
• FP2009
• LAPS2009
• REMI2009
• I2005
• P2004
• AS2004
• F2003
• PD2003

Date	Code	Event	Description
Nov 23, 2009	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Oct 25, 2009	FP	EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Oct 25, 2009
Oct 25, 2009	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
May 04, 2009	REMI	MAINTENANCE FEE REMINDER MAILED
Oct 25, 2005	I	Issuance
Dec 30, 2004	P	Published
Apr 30, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HIRANO, NAOMI;MOMOI, HIROSHI;NISHIO, HIROYASU;AND OTHERS;REEL/FRAME:015287/0667;SIGNING DATES FROM 20031117 TO 20031118 Owner name: ASAHI TECHNO GLASS CORPORATION, JAPAN
Nov 28, 2003	F	Filing
Jun 26, 2003	PD	Priority Date