Method of generating steam in a forced-through-flow boiler
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 31, 1996
Grant Date -
N/A
app pub date -
Dec 20, 1994
filing date -
Feb 9, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for generating steam in a forced-through-flow boiler. During operation, water is conveyed through a preheater, an evaporator and, if needed, a superheater. For such a boiler operated with waste heat, the evaporator is divided into at least two sections, a first one of which is supplied with water at the beginning of a start-up phase and is included in a water circulation, while a second one of the evaporator sections, starting from a dry state, is gradually supplied with water in a controlled manner until, in an operating state, water successively flows through both of the evaporator sections. During the start-up phase, and if desired in low load states, a water-steam mixture is conveyed to a separation tank, from which steam is withdrawn and separated feed water is supplied to the preheater.
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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L & C STEINMULLER GMBH | POSTFACH 10 08 55 GUMMERSBACH 1 5270 |
International Classification(s)

- 1994 Application Filing Year
- F22D Class
- 10 Applications Filed
- 3 Patents Issued To-Date
- 30 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Cesnik, Friedrich | Gummersbach, DE | 1 | 11 |
# of filed Patents : 1 Total Citations : 11 | |||
Stefan, Ion | Gummersbach, DE | 1 | 11 |
# of filed Patents : 1 Total Citations : 11 |
Cited Art Landscape
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Patent Citation Ranking
- 11 Citation Count
- F22D Class
- 75 % this patent is cited more than
- 29 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
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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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