US3211345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the long-continued emission of active substance
Assignee: BASF Schweiz AG
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Filing: 1962-06-25
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Granted: 1965-10-12
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Geiger Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:04
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; A61L9/127; A01; A01M; A01M1/00; A01M1/20; A01M1/2022; A01M1/2027; A01M1/2044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A DEVICE WHICH PROVIDES FOR THE LONG-CONTINUED EVENEVAPORATION OF LIQUID ACTIVE SUBSTANCES, THE SAID DEVICE CONSISTING OF A STORAGE VESSEL FOR THE LIQUID ACTIVE SUBSTANCE, AN EVAPORATION SURFACE COMPRISING AN OUTWARDLY EXTENDING SHEET MATERIAL OPEN TO ATMOSPHERE AND A THIN CAPILLARY BETWEEN THE STORAGE VESSEL AND THE EVAPORATION SURFACE, THE EFFECTIVE DIAMETER OF THE CAPILLARY BEING SUCH THAT THE AMOUNT OF ACTIVE SUBSTANCE THAT IS CONTINUOUSLY DELIVERED TO THE EVAPORTION SURFACE IS SMALLER THAN THE AMOUNT EVAPORATED IN THE SAME UNIT OF TIME, THE CAPILLARY PASSING THROUGH AND BEING CLOSELY FITTED IN A STOPPER WHICH CLOSES THE STORAGE VESSEL AND CONSISTS OF MATERIAL IMPERMEABLE TO THE ACTIVE SUBSTANCE.
Claim 2
Independent Claim
108 words
A DEVICE WHICH PROVIDES FOR THE LONG-CONTINUED EVENEVAPORATION OF LIQUID ACTIVE SUBSTANCES, THE SAID DEVICE CONSISTING OF A STORAGE VESSEL FOR THE LIQUID ACTIVE SUBSTANCE, AN EVAPORATION SURFACE COMPRISING AN OUTWARDLY EXTENDING SHEET MATERIAL OPEN TO ATMOSPHERE AND A THIN CAPILLARY BETWEEN THE STORAGE VESSEL AND THE EVAPORATION SURFACE, THE EFFECTIVE DIAMETER OF THE CAPILLARY BEING SUCH THAT THE AMOUNT OF ACTIVE SUBSTANCE THAT IS CONTINUOUSLY DELIVERED TO THE EVAPORTION SURFACE IS SMALLER THAN THE AMOUNT EVAPORATED IN THE SAME UNIT OF TIME, THE CAPILLARY PASSING THROUGH AND BEING CLOSELY FITTED IN A STOPPER WHICH CLOSES THE STORAGE VESSEL AND CONSISTS OF MATERIAL IMPERMEABLE TO THE ACTIVE SUBSTANCE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |