Method for assessing motor insulation on operating motors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 18, 1997
Issued Date -
N/A
app pub date -
Dec 7, 1995
filing date -
Nov 22, 1993
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for monitoring the condition of electrical-motor-driven devices. The method is achieved by monitoring electrical variables associated with the functioning of an operating motor, applying these electrical variables to a three phase equivalent circuit and determining non-symmetrical faults in the operating motor based upon symmetrical components analysis techniques.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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MARTIN MARIETTA ENERGY SYSTEMS INC | OAK RIDGE TN 37831-8243 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Kueck, John D | Oak Ridge, TN | 2 | 27 |
# of filed Patents : 2 Total Citations : 27 | |||
Otaduy, Pedro J | Oak Ridge, TN | 2 | 27 |
# of filed Patents : 2 Total Citations : 27 |
Cited Art Landscape
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Patent Citation Ranking
- 13 Citation Count
- G01R Class
- 52.86 % this patent is cited more than
- 28 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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

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Aug 09, 2021 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Aug 09, 2021 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jul 07, 2021 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jul 07, 2021 |
Feb 22, 2021 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Dec 07, 2016 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Nov 02, 2012 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 01, 2009 | CC | CERTIFICATE OF CORRECTION | |
Jul 07, 2009 | I | Issuance | |
Jun 17, 2009 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Apr 26, 2007 | P | Published | |
Nov 20, 2006 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WILSON, MARK L.;MEMBRENO, AGUSTIN J.;NIRUMANDRAD, MOHAMMADREZA;REEL/FRAME:018544/0920;SIGNING DATES FROM 20061014 TO 20061016 Owner name: ONBOARD RESEARCH CORPORATION, TEXAS |
Sep 28, 2006 | F | Filing | |
Oct 25, 2005 | PD | Priority Date |

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