US3444104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable polymers
Assignee: Atlantic Richfield Co
•
Filing: 1966-02-16
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Granted: 1969-05-13
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Expires: 1986-02-16
Abstract
No abstract record available.
Inventors
- 👤 Richard H Immel
- 👤 Paul B Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/224; C08K; C08K3/00; C08K3/34; C08J2325/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |