US3493500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic acid polymers
Assignee: Dow Chemical Co
•
Filing: 1966-10-20
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Granted: 1970-02-03
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Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 Henry Volk
- 👤 Percy Jay Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/24; C08L33/26; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08K; C08K3/00; C08K3/10; C08K3/105; C08L33/02; Y; Y10; Y10S; Y10S526/00; Y10S526/91
Claims Analysis
Total Claims: 0
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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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |