US3459490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the disinfection of textiles and other drycleanable articles during drycleaning
Assignee: Boehler & Weber KG Maschf
•
Filing: 1964-04-13
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Granted: 1969-08-05
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Fuhring
- 👤 Klaus Wunderlich
- 👤 Johannes Helmut Sieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:12
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/007; A; A61; A61L; A61L2/00; A61L2/02; A61L2/04; A61L2/16; A61L2/18; D06L; D06L1/00; D06L1/02; A61L2103/00; A61L2103/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD OF DRYCLEANING FABRIC INFECTED WITH MICROORGANISMS, COMPRISING THE STEPS F AGITATING SAID FABRIC AT A TEMPERATURE BELOW ABOUT 40*C. IN CONTACT WITH A LIQUID ORGANIC DRYCLEANING SOLVENT CONSISTING ESSENTIALLY OF PERCHLOROETHYLENE AND HAVING A BOILING POINT ABOVE THE TEMPERATURE AT WHICH SAID MICRO-ORGANISMS UPON ENTRAINMENT IN SAID SOLVENT ARE DESTROYED; LEADING WAY AT LEAST A PORITON OF SOLVENT UPON ITS CONTAMINATION WITH SAID MICRO-ORGANISMS; BRIEFLY HEATING SAID PORTION OF SAID LIQUID SOLVENT TO A TEMPERATURE OF ABOUT 100*C. TO 120* C. AND SUFFICIENT TO DESTROY SAID MICRO-ORGANISMS AND SUBSTANTIALLY IMMEDIATELY THEREAFTER COOLING THE HEATED SOLVENT TO A TEMPERATURE BELOW 40*C.; AND SUBSEQUENTLY CONTACTING SOILED FABRIC WITH THE SOLVENT THUS TREATED.
Claim 2
Independent Claim
112 words
A METHOD OF DRYCLEANING FABRIC INFECTED WITH MICROORGANISMS, COMPRISING THE STEPS F AGITATING SAID FABRIC AT A TEMPERATURE BELOW ABOUT 40*C. IN CONTACT WITH A LIQUID ORGANIC DRYCLEANING SOLVENT CONSISTING ESSENTIALLY OF PERCHLOROETHYLENE AND HAVING A BOILING POINT ABOVE THE TEMPERATURE AT WHICH SAID MICRO-ORGANISMS UPON ENTRAINMENT IN SAID SOLVENT ARE DESTROYED; LEADING WAY AT LEAST A PORITON OF SOLVENT UPON ITS CONTAMINATION WITH SAID MICRO-ORGANISMS; BRIEFLY HEATING SAID PORTION OF SAID LIQUID SOLVENT TO A TEMPERATURE OF ABOUT 100*C. TO 120* C. AND SUFFICIENT TO DESTROY SAID MICRO-ORGANISMS AND SUBSTANTIALLY IMMEDIATELY THEREAFTER COOLING THE HEATED SOLVENT TO A TEMPERATURE BELOW 40*C.; AND SUBSEQUENTLY CONTACTING SOILED FABRIC WITH THE SOLVENT THUS TREATED.
References Cited (Backward Citations)
US3068064A
Cited
GB908643A
Cited
US3101995A
Cited
US3070463A
Cited
US3156648A
Cited
US3240710A
Cited
US3242073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |