US3076007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic isocyanate preparation
Assignee: Union Carbide Corp
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Filing: 1958-08-29
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Granted: 1963-01-29
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Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Barclay
- 👤 Raymond P Kurkjy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:15
CPC Classifications
C; C07; C07C; C07C263/00; C07C263/04; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
METHOD FOR PREPARING PRIMARY ALKYL AND CYCLOALKYL MONOISOCYANATES INCLUDING THE STEPS OF HEATING AN HYDROXY URETHANE HAVING THE FORMULA
Claim 2
Dependent Claim
19 words
METHOD FOR PREPARING PRIMARY ALKYL AND CYCLOALKYL MONOISOCYANATES INCLUDING THE STEPS OF HEATING AN HYDROXY URETHANE HAVING THE FORMULA
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |