US3644493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2 3-dihaloalkyl compounds
Assignee: Monsanto Co
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Filing: 1966-07-15
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Granted: 1972-02-22
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Expires: 1986-07-15
Abstract
Abstract AS NEW COMPOUNDS, THE 2,3-DIBROMOPROPYL ESTERS OF (1) ALKANE POLYCARBOXYLIC ACIDS HAVING FROM 1 TO 14 CARBON ATOMS IN THE ALKANE AND FROM 2 TO 5CARBOXY GROUPS AND (2) OXALIC ACID. THE SAID ESTERS ARE FLAME-RETARDANTS FOR POLYMER SYSTEMS.
Inventors
- 👤 James C Wygant
- 👤 Richard M Auderson
- 👤 Erhard J Prill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:25
CPC Classifications
C; C07; C07C; C07C55/00; C07C55/32; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |