Steam condensing apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 25, 1985
Grant Date -
N/A
app pub date -
Jul 25, 1983
filing date -
Jul 25, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for condensing steam is disclosed herein. This apparatus includes a group of individually removable modules, each of which uses a series of spaced-apart confronting plates to define passageways for the steam to be condensed and ammonia which serves as the condensing medium. As the steam moves in one direction through designated passageways, liquid ammonia moves in the opposite direction in other designated passageways. The liquid ammonia causes the steam to condense which, in turn, causes the liquid ammonia to be reduced to a vapor which itself is condensed at a remote location for repeating the process.
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 | |
---|---|---|
ELECTRIC POWER RESEARCH INSTITUTE A DC CORP | PALO ALTO CA |
International Classification(s)

- 1983 Application Filing Year
- F22G Class
- 2 Applications Filed
- 0 Patents Issued To-Date
- 0 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Johnson, Benjamin M | Kennewick, WA | 9 | 58 |
# of filed Patents : 9 Total Citations : 58 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 3 Citation Count
- F22G Class
- 0 % this patent is cited more than
- 40 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 |
---|---|---|---|
Jan 23, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 27, 1993 | FP | EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 27, 1993 |
Jun 27, 1993 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jan 26, 1993 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jul 05, 1988 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jun 25, 1985 | I | Issuance | |
Jul 25, 1983 | F | Filing | |
Jul 25, 1983 | PD | Priority Date | |
Jul 07, 1983 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOHNSON, BENJAMIN M.;REEL/FRAME:004166/0419 Owner name: ELECTRIC POWER RESEARCH INSTITUTE, PAL ALTO, CA A Effective Date: Jul 07, 1983 |

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