US3223686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of vinyl organic monomers and process for producing the same
Assignee: Montedison SpA
•
Filing: 1958-12-19
•
Granted: 1965-12-14
•
Expires: 1978-12-19
Abstract
No abstract record available.
Inventors
- 👤 Natta Giulio
- 👤 Mazzanti Giorgio
- 👤 Longi Paolo
- 👤 Bernardini Francesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:58
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/04; C08F30/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A LINEAR HIGH MOLECULAR WEIGHT POLYMERIC PRODUCT SELECTED FROM THE GROUP CONSISTING OF (1) CRYSTALLINE HOMOPOLYMERS OF VINYL MONOMERS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
23 words
A LINEAR HIGH MOLECULAR WEIGHT POLYMERIC PRODUCT SELECTED FROM THE GROUP CONSISTING OF (1) CRYSTALLINE HOMOPOLYMERS OF VINYL MONOMERS OF THE GENERAL FORMULA
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US2958681A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |