Patent US3621612A successfully refreshed from Google Patents.
US3621612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of regulating plant growth
Assignee: Northrup King and Co
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Filing: 1970-04-24
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Granted: 1971-11-23
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Expires: 1990-04-24
Abstract
Abstract SEEDS (E.G. SEED CORN) ARE COATED OT RETARD OR DELAY EMERGENCE OF THE SEEDLINGS FOLLOWING PLANTING. THEN, COATED SEEDS ARE PLANTED IN COMPETITIVE PROXIMITY TO UNCOATED SEED TO PERMIT COMPETITION BETWEEN THE RESULTING SEEDLINGS, THEREBY PRESERVING THROUGH THE FLOWERING AND MATURATION PHASES OF GROWTH THE TIME LAG OR DELAY CAUSED BY THE COATINGS.
Inventors
- 👤 Frederic E Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
A; A01; A01C; A01C1/00; A01C1/06; A01N; A01N3/00; Y; Y10; Y10S; Y10S111/00; Y10S111/90; Y10S47/00; Y10S47/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |