Patent US2695258A successfully refreshed from Google Patents.
US2695258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pest control smoke generators
Assignee: Imperial Chemical Industries Ltd
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Filing: 1952-06-27
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Granted: 1954-11-23
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Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Johnstone Cecil
- 👤 Douglas J B Marke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:16
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PEST CONTROL SMOKE GENERATING COMPOSITION COMPRISING AT LEAST ONE VAPORIZABLE PEST CONTROL COMPOUND, AMMONIUM DICHROMATE, AND POTASSIUM PERSULPHATE, WHEREIN THE AMOUNT BY WEIGHT OF POTASSIUM PERSULFPATE TO AMMONIUM DICHROMATE IS BETWEEN 2:3 AND 3:2.
Claim 2
Dependent Claim
35 words
A PEST CONTROL SMOKE GENERATING COMPOSITION COMPRISING AT LEAST ONE VAPORIZABLE PEST CONTROL COMPOUND, AMMONIUM DICHROMATE, AND POTASSIUM PERSULPHATE, WHEREIN THE AMOUNT BY WEIGHT OF POTASSIUM PERSULFPATE TO AMMONIUM DICHROMATE IS BETWEEN 2:3 AND 3:2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |