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

Patent Owner(s)

Patent Owner	Address
OSRAM SYLVANIA INC	100 ENDICOTT STREET DANVERS MA 01923

International Classification(s)

• H01J:ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Feuersanger, Alfred E	Framingham, MA	10	167
# of filed Patents : 10 Total Citations : 167
Rhodes, William H	Lexington, MA	14	237
# of filed Patents : 14 Total Citations : 237
Thibodeau, Rodrigue	Marblehead, MA	2	80
# of filed Patents : 2 Total Citations : 80

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Patent Citation Ranking

• 37 Citation Count
• H01J Class

• 96.86 % this patent is cited more than
• 30 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

Full Text

US Patent No: 5426343

Sealing members for alumina arc tubes and method of making the same

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Abstract

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Alumina arc tube sealing members including a highly pure, fine alumina doped with yttrium oxide, and magnesium oxide. The sealing members are used in the formation of sintered hermetic seals to a green, prefired, or fully sintered translucent alumina arc tube and niobium electrical feedthrough assemblies with or without the use of sealing frits or brazing alloys.

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Description

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Claims

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Legal Events

 

• AS2010
• FPAY2006
• FPAY2002
• FPAY1998
• FEPP1997
• I1995
• STCF1995
• F1992
• PD1992
• AS1992

Date	Code	Event	Description
Sep 02, 2010	AS	ASSIGNMENT	free format text: MERGER;ASSIGNOR:OSRAM SYLVANIA INC.;REEL/FRAME:025546/0415 Owner name: OSRAM SYLVANIA INC., MASSACHUSETTS Effective Date: Sep 02, 2010
Nov 20, 2006	FPAY	FEE PAYMENT	year of fee payment: 12
Sep 13, 2002	FPAY	FEE PAYMENT	year of fee payment: 8
Sep 02, 1998	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 09, 1997	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Jun 20, 1995	I	Issuance
Jun 09, 1995	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Sep 16, 1992	F	Filing
Sep 16, 1992	PD	Priority Date
Sep 15, 1992	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:RHODES, WILLIAM H.;FEUERSANGER, ALFRED E.;THIBODEAU, RODRIGUE;REEL/FRAME:006281/0808 Owner name: GTE PRODUCTS CORPORATION, MASSACHUSETTS Effective Date: Sep 15, 1992