Y10S 165/438
Helical
Y10S165/438 (Helical) appears on 6 US grants and 0 published applications in this corpus.
Search patents in Y10S- Granted patents
- 6
- Published applications
- 0
- Assignees
- 5
- Inventors
- 11
- Latest grant
- 12 Mar 1991
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Heat transfer equipment12 Mar 1991US 4,998,583 ALinde Aktiengesellschaft
- Method and apparatus for recovering heat from flue gases and for cleaning the same20 Mar 1990US 4,909,318 AAlfa-Laval Thermal AB
- Gas liquid parallel flow direct current heat exchanger3 Sep 1985US 4,538,676 AL. & C. Steinmuller GmbH
- Heat exchanger, particularly for heat pumps1 Feb 1983US 4,371,036 A
- Heat reclaiming system31 Aug 1982US 4,346,759 AAerco International, Inc.
No published applications in this class yet.
Most cited
By later US patents
- Heat exchanger, particularly for heat pumps14US 4,371,036 A1983
- Multi-pass heat exchanger having finned conduits of polygonal configuration in cross-section11US 3,991,823 ACurtiss-Wright Corporation · 1976
- Heat reclaiming system9US 4,346,759 AAerco International, Inc. · 1982
- Method and apparatus for recovering heat from flue gases and for cleaning the same7US 4,909,318 AAlfa-Laval Thermal AB · 1990
- Heat transfer equipment4US 4,998,583 ALinde Aktiengesellschaft · 1991