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US3385905A
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US
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Preparation of oligomers of monoalkenyl aromatic monomers
Assignee: Dow Chemical Co
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Filing: 1966-02-18
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Granted: 1968-05-28
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 James G Smith
- 👤 Veach Charlotte Doreen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:20
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/42; C07C2531/00; C07C2531/02; C07C2531/04; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A METHOD FOR PREPARING OLIGOMERS OF MONOALKENYL AROMATIC MONOMERS HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
13 words
A METHOD FOR PREPARING OLIGOMERS OF MONOALKENYL AROMATIC MONOMERS HAVING THE GENERAL FORMULA
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |