Patent US2961798A successfully refreshed from Google Patents.
US2961798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of plants against frost damage
Assignee: Dumas Milner Corp
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Filing: 1959-03-09
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Granted: 1960-11-29
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Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 Louis E Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:14
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/06; A01N; A01N25/00; A01N25/02; A01N43/00; A01N43/34; A01N43/36; A01N43/90; A01N2300/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD OF PROTECTING LIVING PLANTS FROM FROST DAMAGE WHICH COMPRISES APPLYING TO THE PLANT A FILM OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN N-LOWER ALKYL-2-PYRROLIDONE, 2-PYRROLIDONE AND BUTYROLACTONE IN A NON-PHYTOTOXIC CARRIER.
Claim 2
Independent Claim
36 words
THE METHOD OF PROTECTING LIVING PLANTS FROM FROST DAMAGE WHICH COMPRISES APPLYING TO THE PLANT A FILM OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN N-LOWER ALKYL-2-PYRROLIDONE, 2-PYRROLIDONE AND BUTYROLACTONE IN A NON-PHYTOTOXIC CARRIER.
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |