Cleaning system utilizing an organic cleaning solvent and a pressurized fluid solvent
Abstract
A cleaning system that utilizes an organic cleaning solvent and pressurized fluid solvent is disclosed. The system has no conventional evaporative hot air drying cycle. Instead, the system utilizes the solubility of the organic solvent in pressurized fluid solvent as well as the physical properties of pressurized fluid solvent. After an organic solvent cleaning cycle, the solvent is extracted from the textiles at high speed in a rotating drum in the same way conventional solvents are extracted from textiles in conventional evaporative hot air dry cleaning machines. Instead of proceeding to a conventional drying cycle, the extracted textiles are then immersed in pressurized fluid solvent to extract the residual organic solvent from the textiles. This is possible because the organic solvent is soluble in pressurized fluid solvent. After the textiles are immersed in pressurized fluid solvent, pressurized fluid solvent is pumped from the drum. Finally, the drum is de-pressurized to atmospheric pressure to evaporate any remaining pressurized fluid solvent, yielding clean, solvent free textiles. The organic solvent is preferably dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether or tripropylene glycol methyl ether, a mixture thereof, or a similar solvent and the pressurized fluid solvent is preferably densified carbon dioxide.
Term
No projected expiry on record.
- Priority
- Filed
- Published
- Today
78 members in 13 offices
Priority claims12
| Document | Office | Kind | Date |
|---|---|---|---|
| 41934599 | United States of America | A | |
| 41934599 | United States of America | A | |
| 68677300 | United States of America | A | |
| 68677300 | United States of America | A | |
| 0028433 | United States of America | W | |
| 0028433 | United States of America | W | |
| 0028433 | – | – | – |
| 419345 | – | – | – |
| 686773 | – | – | – |
| US19990419345 | – | – | – |
| US20000686773 | – | – | – |
| WO2000US28433 | – | – | – |
Members78
| Document | Office | Kind | |
|---|---|---|---|
| CA2388500A1 | Canada | A1 | |
| CA2388913A1 | Canada | A1 | |
| WO0129305A1 | World Intellectual Property Organization (WIPO) | A1 | |
| WO0129306A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU8021700A | Australia | A | |
| AU8021800A | Australia | A | |
| US2002010965A1 | United States of America | A1 | |
| US2002011258A1 | United States of America | A1 | |
| US6355072B1 | United States of America | B1 | |
| NO20021764D0 | Norway | D0 | |
| NO20021765D0 | Norway | D0 | |
| NO20021764L | Norway | L | |
| NO20021765LThis record | Norway | L | |
| EP1224351A1 | European Patent Office (EPO) | A1 | |
| EP1224352A1 | European Patent Office (EPO) | A1 | |
| US2002100124A1 | United States of America | A1 | |
| BR0014770A | Brazil | A | |
| CA2444807A1 | Canada | A1 | |
| CA2445448A1 | Canada | A1 | |
| CA2647080A1 | Canada | A1 | |
| WO02086222A1 | World Intellectual Property Organization (WIPO) | A1 | |
| WO02086223A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU2002256275B9 | Australia | B9 | |
| WO02086223B1 | World Intellectual Property Organization (WIPO) | B1 | |
| JP2003512111A | Japan | A | |
| US6558432B2 | United States of America | B2 | |
| BR0014772A | Brazil | A | |
| NZ518788A | New Zealand | A | |
| US2003220219A1 | United States of America | A1 | |
| EP1381728A1 | European Patent Office (EPO) | A1 | |
| EP1383951A1 | European Patent Office (EPO) | A1 | |
| CA2388500C | Canada | C | |
| CA2388913C | Canada | C | |
| US6736859B2 | United States of America | B2 | |
| JP2004515560A | Japan | A | |
| US6755871B2 | United States of America | B2 | |
| US2004168262A1 | United States of America | A1 | |
| MXPA02003817A | Mexico | A | |
| US2004173246A1 | United States of America | A1 | |
| MXPA02003816A | Mexico | A | |
| AU777996B2 | Australia | B2 | |
| MXPA03009617A | Mexico | A | |
| AU778581B2 | Australia | B2 | |
| NZ529724A | New Zealand | A | |
| BR0209201A | Brazil | A | |
| MXPA03009721A | Mexico | A | |
| NZ526305A | New Zealand | A | |
| EP1224351B1 | European Patent Office (EPO) | B1 | |
| EP1224352B1 | European Patent Office (EPO) | B1 | |
| US7097715B1 | United States of America | B1 | |
| NZ529457A | New Zealand | A | |
| AT337427T | Austria | T | |
| AT337428T | Austria | T | |
| DE60030304D1 | Germany | D1 | |
| DE60030305D1 | Germany | D1 | |
| BR0209037A | Brazil | A | |
| US7147670B2 | United States of America | B2 | |
| US2007017036A1 | United States of America | A1 | |
| ES2270877T3 | Spain | T3 | |
| US2007087955A1 | United States of America | A1 | |
| AU2002256275B2 | Australia | B2 | |
| DE60030304T2 | Germany | T2 | |
| DE60030305T2 | Germany | T2 | |
| AU2002309578B2 | Australia | B2 | |
| US2008127427A1 | United States of America | A1 | |
| US7435265B2 | United States of America | B2 | |
| US2008263781A1 | United States of America | A1 | |
| CA2445448C | Canada | C | |
| US7534308B2 | United States of America | B2 | |
| US7566347B2 | United States of America | B2 | |
| US2009193594A1 | United States of America | A1 | |
| US2009255061A1 | United States of America | A1 | |
| CA2444807C | Canada | C | |
| USRE41115E | United States of America | E | |
| JP4563638B2 | Japan | B2 | |
| US7867288B2 | United States of America | B2 | |
| US2011073138A1 | United States of America | A1 | |
| BR0014770B1 | Brazil | B1 |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Withdrawal, rejection or dismissal of laid open patent applicationFC2A | FC2A |
Numbers
- Publication, DOCDB
- 20021765
- Publication, EPODOC
- NO20021765L
- Application
- 1765
- Application, DOCDB
- 20021765
- Application, EPODOC
- NO20020001765
Titles2
- Norwegian
- Rensesystem som anvender et organisk renselösningsmiddel og et trykksatt fluidlösningsmiddel
- English
- Purification system using an organic cleaning solvent and a pressurized fluid solvent
Classification
- CPC, 7
- B08B3/12
- B08B7/0021
- C11D7/263
- C11D7/264
- C11D7/266
- C11D7/5022
- C11D2111/12
- IPC, 9
- D06L1 02
- B08B3 02
- B08B3 08
- B08B3 12
- B08B7 00
- C11D7 26
- C11D7 50
- C11D11 00
- D06F43 08