Patent US2615030A successfully refreshed from Google Patents.
US2615030A
Expired / Lapsed
US
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Reaction product of thiourea, an aldonic acid and zinc oxide
Assignee: Poor and Co
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Filing: 1950-12-06
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Granted: 1952-10-21
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Expires: 1970-12-06
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:04
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
THE PRODUCT OF THE REACTION OF THIOUREA, AN ALDONIC ACID AND ZINC OXIDE.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |