Cooled grate block
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 7, 1998
Grant Date -
N/A
app pub date -
May 17, 1996
filing date -
May 17, 1995
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
For cooling a grate block which forms a part of a grate for plants for the thermal treatment of waste material, a closed cooling chamber inside a block body of the grate block below an upper wall bearing the waste material is filled with cooling water and is closed in a sealing manner from the bottom by a base provided with an insulation layer. Effective cooling of the parts of the grate block which are subject to the greatest thermal loading takes place, greatly reducing the temperatures. Since thermal expansions in the material are dispensed with, a grate-block row can be formed by only a few grate blocks screwed to one another. The assembly and exchange of grate blocks are simpler; and the undesirable dropping of waste material through the grate between the grate blocks is largely eliminated. Additionally, the grate blocks can be produced from less expensive material.
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 | |
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VON ROLL UMWELTTECHNIK AG | HARDTURMSTRASSE 127 ZURICH CH-8037 |
International Classification(s)

- 1996 Application Filing Year
- F23H Class
- 5 Applications Filed
- 1 Patents Issued To-Date
- 20 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Hauser, Rolf | Gruningen, CH | 3 | 165 |
# of filed Patents : 3 Total Citations : 165 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 7 Citation Count
- F23H Class
- 8.33 % this patent is cited more than
- 27 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 |
---|---|---|---|
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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Jan 22, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Nov 12, 1997 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CROWN CORK & SEAL COMPANY, INC., A PENNSYLVANIA CORPORATION;REEL/FRAME:008876/0082 Owner name: CROWN-SIMPLIMATIC, INCORPORATED, VIRGINIA Effective Date: Nov 12, 1997 |
Jun 14, 1995 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 14, 1995 |
Jun 11, 1995 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jun 14, 1983 | I | Issuance | |
Jun 17, 1981 | F | Filing | |
Jun 04, 1981 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:FRANEK, JOSEF T.;PORUCZNIK, PAUL;STYLES, ALAN E.;REEL/FRAME:003896/0801 Owner name: METAL BOX LIMITED, QUEENS HOSE, FORBURY RD.,READIN Effective Date: Jun 04, 1981 |
Oct 27, 1979 | PD | Priority Date |

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