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

Patent Owner(s)

Patent Owner	Address
HYPERION CATALYSIS INTERNATIONAL INC	CAMBRIDGE MA

International Classification(s)

• B82B:NANO-STRUCTURES; MANUFACTURE OR TREATMENT THEREOF

• 2007 Application Filing Year
• B82B Class
• 37 Applications Filed
• 14 Patents Issued To-Date
• 37.84 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chishti, Asif	Lowell, US	24	748
# of filed Patents : 24 Total Citations : 748
Hoch, Robert	Hensonville, US	69	2188
# of filed Patents : 69 Total Citations : 2188
Moy, David	Winchester, US	71	2503
# of filed Patents : 71 Total Citations : 2503
Niu, Chunming	Lexington, US	96	6237
# of filed Patents : 96 Total Citations : 6237

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	May 12, 2025

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
November 12, 2013	US,8580436,B2   US8580436B2	GRANTED PATENT AS SECOND PUBLICATION
May 01, 2008	US,20080102020,A1   US20080102020A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: RE46899

Displacement sensing method and motor control apparatus

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Abstract

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A displacement sensing method of the present invention includes the steps of superimposing a predetermined signal on a torque command to supply a drive torque to a motor, measuring an amplitude spectrum ratio between the drive torque in superimposing the predetermined signal on the torque command and a motor angle measured by a displacement sensor, generating correction data for evening out the amplitude spectrum ratio, and correcting the measured motor angle so that the motor angle measured by the displacement sensor is equal to an actual motor angle using the correction data.

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Description

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Claims

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Claims data not available

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Legal Events

 

• MAFP2023
• MAFP2019
• I2018
• F2013
• PD2007

Date	Code	Event	Description
May 23, 2023	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12
May 23, 2019	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Jun 19, 2018	I	Issuance
Dec 05, 2013	F	Filing
Sep 14, 2007	PD	Priority Date