Dental prostheses

United States of America Patent

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Nov 12, 1991
Grant Date
N/A
app pub date
Mar 21, 1990
filing date
Mar 29, 1989

priority date (Note)
Expired

status (Latency Note)

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Abstract

A dental prosthesis comprises an inner layer portion and an outer layer portion. The outer layer portion is a dental porcelain material, while the inner layer portion is a sintered product which, after sintering, is composed of: (i) 40 to 95% by weight of one or (two or) more electric conductive ceramic materials selected from the group consisting of nitride ceramics, boride ceramics and carbide ceramics, all having a specific electric resistance of 10.sup.-1 .OMEGA..multidot.cm or below, and (ii) 5 to 60% by weight of the following (A) and/or (B): (A) a dental porcelain material, and (B) one or (two or) more metals selected from the group consisting of Ti, Zr, Au, Pt, Pd, Ag, In and Sn.

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Patent Owner(s)

Patent Owner	Address
G-C DENTAL INDUSTRIAL CORP	TOKYO

International Classification(s)

B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hayashi, Shohei	Tokyo, JP	29	221
# of filed Patents : 29 Total Citations : 221
Inamochi, Takashi	Tokyo, JP	1	24
# of filed Patents : 1 Total Citations : 24
Kitamura, Masaaki	Tokyo, JP	1	24
# of filed Patents : 1 Total Citations : 24
Miyazaki, Takashi	Tokyo, JP	144	1645
# of filed Patents : 144 Total Citations : 1645

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Dental prostheses

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07496943

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Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
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Date	Code	Event	Description
May 18, 2015	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Apr 17, 2015	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Apr 17, 2015
Apr 17, 2015	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 28, 2014	REMI	MAINTENANCE FEE REMINDER MAILED
Oct 18, 2010	FPAY	FEE PAYMENT	year of fee payment: 4
Nov 01, 2008	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Sep 13, 2008	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEDNA PATENT SERVICES, LLC (F/K/A TVGATEWAY, LLC);REEL/FRAME:021570/0353 Owner name: COMCAST IP HOLDINGS I, LLC, DELAWARE Effective Date: Sep 13, 2008 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEDNA PATENT SERVICES, LLC (F/K/A TVGATEWAY, LLC);REEL/FRAME:021570/0353 Owner name: COMCAST IP HOLDINGS I, LLC,DELAWARE Effective Date: Sep 13, 2008
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Apr 17, 2007	I	Issuance
Sep 14, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DISCOVERY COMMUNICATIONS, INC.;REEL/FRAME:015239/0350 Owner name: SEDNA PATENT SERVICES, LLC, PENNSYLVANIA Effective Date: Sep 14, 2004 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DISCOVERY COMMUNICATIONS, INC.;REEL/FRAME:015239/0350 Owner name: SEDNA PATENT SERVICES, LLC,PENNSYLVANIA Effective Date: Sep 14, 2004
Nov 02, 2003	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Feb 03, 1997	F	Filing
Dec 09, 1992	PD	Priority Date

PATENT NO	5064731
SERIAL NO	07496943
DOCKET NO

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07496943

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