US2750252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying lindane
Assignee: Individual
•
Filing: 1951-06-26
•
Granted: 1956-06-12
•
Expires: 1971-06-26
Abstract
No abstract record available.
Inventors
- 👤 William N Sullivan
- 👤 Frank H Babers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:41
CPC Classifications
A; A01; A01M; A01M13/00; A01M13/003; A01M1/00; A01M1/20; A01M1/2022; A01M1/2027; A01M1/2044; A01M1/2055; A01M2200/00; A01M2200/01; A01M2200/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF REDUCING INSECT LIFE IN A VENTILATED ROOM SUITABLE FOR OCCUPANCY BY HUMAN BEINGS, EMPLOYING THE SLIGHTLY VOLATILE PESTICIDE, LINDANE, AND WITHOUT HEATING THE LATTER, COMPRISING PROPELLING A STREAM OF AIR AT ROOM TEMPERATURE OVER A MASS OF CRYSTALS OF LINDANE RANGING FROM ABOUT 50 TO 100 MICRONS IN DIAMETER CONFINED AND SUPPORTED IN THE PATH OF THE AIR STREAM, THE CRYSTALS BEING SPACED SUFFICIENTLY APART TO PERMIT EFFECTIVE SUBLIMATION AND TO PERMIT THE STREAM OF AIR TO PASS UNIFORMLY AND FREELY OVER THE CRYSTALS IN SAID MASS OVER THE ENTIRE AREA THEREOF PRESENTED TO THE STREAM, THE AIR BEING DELIVERED THROUGH THE MASS AT A RATE OF AT LEAST ABOUT 100 CUBIC FEET PERT MINUTE, THE RATE BEING CORRELATED WITH THE SIZE OF THE ROOM TO OBTAIN A RAPID APPROACH TO SATURATION OF THE AIR WITH LINDANE VAPOR, WHICH IS ABOUT 0.00016 MG. PER LITER OF AIR AT 20* C.
Claim 2
Independent Claim
153 words
A METHOD OF REDUCING INSECT LIFE IN A VENTILATED ROOM SUITABLE FOR OCCUPANCY BY HUMAN BEINGS, EMPLOYING THE SLIGHTLY VOLATILE PESTICIDE, LINDANE, AND WITHOUT HEATING THE LATTER, COMPRISING PROPELLING A STREAM OF AIR AT ROOM TEMPERATURE OVER A MASS OF CRYSTALS OF LINDANE RANGING FROM ABOUT 50 TO 100 MICRONS IN DIAMETER CONFINED AND SUPPORTED IN THE PATH OF THE AIR STREAM, THE CRYSTALS BEING SPACED SUFFICIENTLY APART TO PERMIT EFFECTIVE SUBLIMATION AND TO PERMIT THE STREAM OF AIR TO PASS UNIFORMLY AND FREELY OVER THE CRYSTALS IN SAID MASS OVER THE ENTIRE AREA THEREOF PRESENTED TO THE STREAM, THE AIR BEING DELIVERED THROUGH THE MASS AT A RATE OF AT LEAST ABOUT 100 CUBIC FEET PERT MINUTE, THE RATE BEING CORRELATED WITH THE SIZE OF THE ROOM TO OBTAIN A RAPID APPROACH TO SATURATION OF THE AIR WITH LINDANE VAPOR, WHICH IS ABOUT 0.00016 MG. PER LITER OF AIR AT 20* C.
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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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |