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

Patent Owner(s)

Patent Owner	Address
1564330 ONTARIO INC	P O BOX 668 SEAFORTH ONTARIO N0K 1W0

International Classification(s)

• F01C:ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR EN....

• 2003 Application Filing Year
• F01C Class
• 153 Applications Filed
• 41 Patents Issued To-Date
• 26.80 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Patterson, Albert W	Ontario, CA	18	75
# of filed Patents : 18 Total Citations : 75

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Patent Citation Ranking

• 8 Citation Count
• F01C Class

• 11.48 % 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
September 20, 2005	US,6945218,B2   US6945218B2	GRANTED PATENT AS SECOND PUBLICATION
April 14, 2005	US,20050079084,A1   US20050079084A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6945218

Rotary pistons

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Abstract

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A rotary piston for use in pumps or motors, the piston having a cylindrical rotor with radially movable vanes rotating within a housing, the movement of the vanes controlled by pins of the vanes travelling in races in the housing.

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Description

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Claims

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Claims data not available

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Legal Events

 

• FPAY2017
• FPAY2013
• FPAY2009
• FEPP2008
• I2005
• STCF2005
• P2005
• AS2004
• F2003
• PD2003

Date	Code	Event	Description
Mar 14, 2017	FPAY	FEE PAYMENT	year of fee payment: 12
Mar 08, 2013	FPAY	FEE PAYMENT	year of fee payment: 8
Mar 03, 2009	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 03, 2008	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY
Sep 20, 2005	I	Issuance
Aug 31, 2005	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Apr 14, 2005	P	Published
Apr 12, 2004	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PATTERSON, ALBERT W.;REEL/FRAME:014771/0092 Owner name: 1564330 ONTARIO INC., CANADA Effective Date: Apr 12, 2004
Oct 08, 2003	F	Filing
Oct 08, 2003	PD	Priority Date