US3206445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl aromatic sulfonate polymerization process and product
Assignee: Dow Chemical Co
•
Filing: 1962-02-05
•
Granted: 1965-09-14
•
Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Volk Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
AN ULTRAHIGH MOLECULAR WEIGHT POLYMERIZED AROMATIC SULFONATE CHARACTERIZED BY HIGH MOLECULAR LINEARITY CORRESPONDING TO A VINYL POLYERIZATION PRODUCT OF A MONOMER HAVING A GENERAL FORMULA:
Claim 2
Dependent Claim
25 words
AN ULTRAHIGH MOLECULAR WEIGHT POLYMERIZED AROMATIC SULFONATE CHARACTERIZED BY HIGH MOLECULAR LINEARITY CORRESPONDING TO A VINYL POLYERIZATION PRODUCT OF A MONOMER HAVING A GENERAL FORMULA:
References Cited (Backward Citations)
US2678947A
Cited
US2691644A
Cited
US2837500A
Cited
US2821549A
Cited
US3022172A
Cited
US3079430A
Cited
US3067161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |