Hydraulic gas compressor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 1998
Grant Date -
N/A
app pub date -
Nov 27, 1995
filing date -
Aug 23, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gas compressor includes a housing, a separating element in the housing, and a piston guided for movement along the separating element by a drive mechanism between two dead center positions. Gas is compressed in a three-stage compression cycle by the piston in three separate gas chambers arranged in series in the housing. Pressure increases in the gas are easily feasible from very low to very high pressures, for instance from 5 to 400 bar, based on a relatively small installation. The gas compressor includes only a few wear parts for low manufacturing and maintenance costs and for fail-safe operation.
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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HYDAC TECHNOLOGY GMBH | GERMANY |
International Classification(s)

- 1995 Application Filing Year
- F04B Class
- 447 Applications Filed
- 214 Patents Issued To-Date
- 47.88 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Margardt, Manfred | Heusweiler-Holz, DE | 1 | 29 |
# of filed Patents : 1 Total Citations : 29 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 29 Citation Count
- F04B Class
- 86.31 % 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 |
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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 |
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