Heat exchanger for combustion apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 15, 1997
Grant Date -
N/A
app pub date -
Dec 6, 1994
filing date -
Dec 7, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heat exchanger for a combustion apparatus capable of providing satisfactory sealing between an open end of an oxidizing agent duct and a regenerative structure. A regenerator includes a high-temperature section constituted by a regenerative unit made of a ceramic material and a low-temperature section constituted by a regenerative unit made of a metal material. The regenerator is formed with a plurality of communication passages which permit a combustion chamber and a suction/exhaust duct structure to communicate with each other. The communication passages are provided by a plurality of through-holes formed in the regenerative units. The number of the through-holes and an equivalent diameter thereof are determined so as to permit a pressure loss gradient in the low-temperature section positioned on the side of the suction/exhaust duct structure to be larger than that in the high-temperature section positioned on the side of the combustion chamber.
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 | |
---|---|---|
CHIYODA CORPORATION | KANAGAWA 220-8765 | |
FURNACE TECHNO CO LTD | SAWADASEITOKU BUILDING 4-7 HORAICHO 2-CHOME NAKA-KU YOKOHAMA-SHI KANAGAWA-KEN |
International Classification(s)

- 1994 Application Filing Year
- F27D Class
- 96 Applications Filed
- 48 Patents Issued To-Date
- 50 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bunya, Shunzo | Kanagawa, JP | 1 | 13 |
# of filed Patents : 1 Total Citations : 13 | |||
Hirose, Yasuo | Kanagawa, JP | 21 | 219 |
# of filed Patents : 21 Total Citations : 219 | |||
Kaji, Hitoshi | Kanagawa, JP | 6 | 40 |
# of filed Patents : 6 Total Citations : 40 |
Cited Art Landscape
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Patent Citation Ranking
- 13 Citation Count
- F27D Class
- 76.25 % this patent is cited more than
- 28 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

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Nov 11, 2024 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Nov 09, 2020 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
May 09, 2017 | I | Issuance | |
Apr 19, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jun 26, 2014 | P | Published | |
Jan 29, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CADET, MAMONJY;CRETIER, ANNETTE;SAINT-LU, CHARLOTTE;SIGNING DATES FROM 20131231 TO 20140122;REEL/FRAME:032078/0208 Owner name: SATISLOH AG, SWITZERLAND |
Jun 28, 2012 | F | Filing | |
Jul 22, 2011 | PD | Priority Date |

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