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

Patent Owner(s)

Patent Owner	Address
BECKMAN INSTRUMENTS INC	485 POTRERO AVENUE SUNNYVALE CA 94086

International Classification(s)

• B04B:CENTRIFUGES

• 1997 Application Filing Year
• B04B Class
• 90 Applications Filed
• 57 Patents Issued To-Date
• 63.34 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Coffey, Robert G	Campbell, CA	3	40
# of filed Patents : 3 Total Citations : 40
Hanquist, Dean A	Palo Alto, CA	1	7
# of filed Patents : 1 Total Citations : 7
Lung, Terence T	Sunnyvale, CA	1	7
# of filed Patents : 1 Total Citations : 7
Moore, Patrick Q	Gilroy, CA	14	239
# of filed Patents : 14 Total Citations : 239

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Patent Citation Ranking

• 7 Citation Count
• B04B Class

• 4.17 % this patent is cited more than
• 27 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: 5728038

Centrifuge rotor having structural stress relief

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Abstract

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A centrifuge rotor with a body having a spin axis and a plurality of bores formed therein, each of which is adapted to support a centrifuge container. The rotor includes a load reducing feature to decrease the loading between the rotor body and the centrifuge container, during centrifugation. The load reducing feature includes separating a portion of an annular shoulder of a centrifuge container from the rotor body. The portion of the annular shoulder that is separated is disposed between the spin axis and the bore associated with the centrifuge container.

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Description

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Claims

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Claims data not available

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Legal Events

 

• FPAY2009
• FPAY2005
• FPAY2001
• FEPP2000
• I1998
• STCF1998
• AS1997
• F1997
• PD1997

Date	Code	Event	Description
Sep 17, 2009	FPAY	FEE PAYMENT	year of fee payment: 12
Sep 19, 2005	FPAY	FEE PAYMENT	year of fee payment: 8
Aug 29, 2001	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 08, 2000	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Mar 17, 1998	I	Issuance
Feb 09, 1998	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Jun 09, 1997	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:COFFEY, ROBERT G.;HANQUIST, DEAN A.;MOORE, PATRICK Q.;AND OTHERS;REEL/FRAME:008569/0442 Owner name: BECKMAN INSTRUMENTS, INC., CALIFORNIA Effective Date: Jun 09, 1997
Apr 25, 1997	F	Filing
Apr 25, 1997	PD	Priority Date