Patent US2743548A successfully refreshed from Google Patents.
US2743548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of vaporizing a mixture of organic insecticides in ventilated rooms
Assignee: American Aerovap Inc
•
Filing: 1951-02-12
•
Granted: 1956-05-01
•
Expires: 1971-02-12
Abstract
No abstract record available.
Inventors
- 👤 David H Christopher
- 👤 Philip J Spear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:04
CPC Classifications
A; A01; A01M; A01M13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE METHOD OF MAINTAINING SUBSTANTIALLY FREE FROM INSECT LIFE A VANTILATED ROOM SUITABLE FOR OCCUPANCY BY HUMAN BEINGS WHICH COMPRISES CONSTANTLY EVAPORATING THEREINTO, BY CONTROLLED APPLICATION OF HEAT, A MASS, THE VAPORIZABLE COMPONENTS OF WHICH CONSIST ESSENTIALLY OF A MIXTURE OF AT LEAST 25 PER CENT OF LINDANE AND ANOTHER ORGANIC INSECTICIDE THAT IS SOLID AT ROOM TEMPERATURE AND THAT HAS A VAPOR PRESSURE MUCH LOWER THAN THAT OF THE LINDANE.
Claim 2
Independent Claim
71 words
THE METHOD OF MAINTAINING SUBSTANTIALLY FREE FROM INSECT LIFE A VANTILATED ROOM SUITABLE FOR OCCUPANCY BY HUMAN BEINGS WHICH COMPRISES CONSTANTLY EVAPORATING THEREINTO, BY CONTROLLED APPLICATION OF HEAT, A MASS, THE VAPORIZABLE COMPONENTS OF WHICH CONSIST ESSENTIALLY OF A MIXTURE OF AT LEAST 25 PER CENT OF LINDANE AND ANOTHER ORGANIC INSECTICIDE THAT IS SOLID AT ROOM TEMPERATURE AND THAT HAS A VAPOR PRESSURE MUCH LOWER THAN THAT OF THE LINDANE.
References Cited (Backward Citations)
US1955963A
Cited
US1468842A
Cited
US2321023A
Cited
GB548853A
Cited
US2416256A
Cited
US2392372A
Cited
GB639937A
Cited
US2532349A
Cited
US2541637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |