Steam trap operation detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 6, 1990
Grant Date -
N/A
app pub date -
Nov 28, 1988
filing date -
Feb 9, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A steam trap operation detector provided with a vibration detecting section and a arithmetric section. The detecting section includes a probe, a diaphragm for generating ultrasonic vibration in response to mechanical vibrations sensed by the probe and a vibration sensor for converting the ultrasonic vibration into an electrical signal. The detector also includes an arthimetric section for receiving an amplified signal from the vibration sensor and processing the same into information indicative of the operation of the steam trap.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
TLV CO LTD A CORP OF JAPAN | 881 NAGASUNA NOGUCHI-CHO KAKOGAWA-SHI HYOGO-KEN 675 |
International Classification(s)

- 1988 Application Filing Year
- G01M Class
- 250 Applications Filed
- 0 Patents Issued To-Date
- 0 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fujiwara, Yoshiyasu | Kakogawa, JP | 18 | 164 |
# of filed Patents : 18 Total Citations : 164 | |||
Hosokawa, Yasutoshi | Kakogawa, JP | 2 | 80 |
# of filed Patents : 2 Total Citations : 80 | |||
Nagase, Mamoru | Kakogawa, JP | 12 | 122 |
# of filed Patents : 12 Total Citations : 122 | |||
Okamoto, Masakatsu | Kakogawa, JP | 7 | 105 |
# of filed Patents : 7 Total Citations : 105 | |||
Yamada, Yoshito | Kakogawa, JP | 7 | 96 |
# of filed Patents : 7 Total Citations : 96 | |||
Yonemura, Masao | Kakogawa, JP | 7 | 123 |
# of filed Patents : 7 Total Citations : 123 | |||
Yumoto, Hideaki | Kakogawa, JP | 32 | 254 |
# of filed Patents : 32 Total Citations : 254 |
Cited Art Landscape
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Patent Citation Ranking
- 70 Citation Count
- G01M Class
- 0 % this patent is cited more than
- 35 Age
Forward Cite Landscape
- No Forward Cites to Display

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 |
---|---|---|---|
Jul 13, 2018 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:AMKOR TECHNOLOGY, INC.;REEL/FRAME:046683/0139 Owner name: BANK OF AMERICA, N.A., AS AGENT, CALIFORNIA Effective Date: Jul 13, 2018 |
Apr 23, 2012 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Mar 23, 2012 | FP | EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Mar 23, 2012 |
Mar 23, 2012 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Nov 07, 2011 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Sep 21, 2007 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Nov 23, 2005 | AS� | SECURITY INTEREST | free format text: SECURITY AGREEMENT;ASSIGNOR:AMKOR TECHNOLOGY, INC.;REEL/FRAME:017379/0630 Owner name: BANK OF AMERICA, N.A., TEXAS Effective Date: Nov 23, 2005 |
Oct 27, 2004 | AS� | SECURITY INTEREST | free format text: SECURITY AGREEMENT;ASSIGNORS:AMKOR TECHNOLOGY, INC.;GUARDIAN ASSETS, INC.;REEL/FRAME:015320/0005 Owner name: CITICORP NORTH AMERICA, INC. AS AGENT, PENNSYLVANI Effective Date: Oct 27, 2004 free format text: SECURITY AGREEMENT;ASSIGNORS:AMKOR TECHNOLOGY, INC.;GUARDIAN ASSETS, INC.;REEL/FRAME:015942/0521 Owner name: CITICORP NORTH AMERICA, INC. AS 'AGENT', NEW YORK Effective Date: Oct 27, 2004 |
Mar 23, 2004 | I | Issuance | |
Aug 21, 2003 | P | Published | |
Mar 13, 2003 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YEO, YONG KEE;KHAN, NAVAS O.K.;IYER, MAHADEVAN K;REEL/FRAME:014070/0339 Owner name: INSTITUTE OF MICROELECTRONICS, JAPAN Effective Date: Mar 13, 2003 |
Feb 19, 2002 | F | Filing | |
Nov 02, 2001 | PD | Priority Date |

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