Y10S 62/90
Triple column
Y10S62/90 (Triple column) appears on 25 US grants and 4 published applications in this corpus.
Search patents in Y10S- Granted patents
- 25
- Published applications
- 4
- Assignees
- 7
- Inventors
- 31
- Latest grant
- 25 Nov 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 6 | 1 |
| 2002 | 0 | 2 |
| 2003 | 5 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Process and apparatus for the cryogenic separation of air25 Nov 2003US 6,651,460 B2Air Products and Chemicals, Inc.
- Cryogenic rectification system for producing low purity oxygen using shelf vapor turboexpansion23 Sep 2003US 6,622,520 B1Praxair Technology, Inc.
- Three-column system for the low-temperature fractionation of air20 May 2003US 6,564,581 B2Linde Aktiengesellschaft
- Three column cryogenic air separation system with dual pressure air feeds25 Mar 2003US 6,536,234 B1Praxair Technology, Inc.
- Obtaining argon using a three-column system for the fractionation of air and a crude argon column11 Mar 2003US 6,530,242 B2Linde Aktiengesellschaft
- Process and apparatus for the cryogenic separation of air5 Jun 2003US 2003/0101745 A1Air Products and Chemicals, Inc.
- Three-column system for the low-temperature fractionation of air19 Dec 2002US 2002/0189281 A1Linde Aktiengesellschaft
- Obtaining argon using a three-column system for the fractionation of air and a crude argon column5 Dec 2002US 2002/0178747 A1Linde Aktiengesellschaft
- Plant for separation of a gas mixture by distillation24 May 2001US 2001/0001364 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Triple column distillation system for oxygen and pressurized nitrogen production46US 5,341,646 AAir Products and Chemicals, Inc. · 1994
- Triple column cryogenic rectification system24US 5,245,832 APraxair Technology, Inc. · 1993
- Air separation17US 5,438,835 AThe BOC Group, Inc. · 1995
- Three column cryogenic cycle for the production of impure oxygen and pure nitrogen15US 5,682,764 AAir Products and Chemicals, Inc. · 1997
- Multiple column nitrogen generators with oxygen coproduction14US 5,934,104 AAir Products and Chemicals, Inc. · 1999