Sensor for measuring resistivity
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 13, 2003
Grant Date -
Aug 8, 2002
app pub date -
Feb 8, 2001
filing date -
Jul 23, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sensor for measuring resistivity having metallic electrode members with excellent resistance to corrosion and oxidation is provided. The metallic electrode member for measuring resistivity of liquid consists of nickel-based alloy containing 19 to 24 wt % of chromium and 1 to 7 wt % of iron. The sensor for measuring resistivity enables stable measurement of the resistivity over a long period of time with simple maintenance.
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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KABUSHIKI KAISHA SAGINOMIYA SEISAKUSHO | TOKYO 165-0033 |
International Classification(s)
- Non-US Classification not provided for expired patents
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Kamesaka, Seiji | Tokyo, JP | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 | |||
Yasuda, Yoshimichi | Tokyo, JP | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 |
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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

Legal Events
Date | Code | Event | Description |
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Sep 02, 2019 | 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: LARGE ENTITY |
Sep 02, 2019 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jul 31, 2019 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jul 31, 2019 |
Mar 18, 2019 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Feb 02, 2015 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Jan 24, 2011 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jul 31, 2007 | I | Issuance | |
Jul 11, 2007 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Apr 20, 2005 | F | Filing | |
Apr 15, 2005 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEWMAN, KENT DAVID;CROCKER, TODD WILLIAM;REEL/FRAME:016492/0388 Owner name: UNIDEN AMERICAN CORPOATION, TEXAS Effective Date: Apr 15, 2005 |
Jul 26, 2002 | PD | Priority Date |

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