Patent US3355439A successfully refreshed from Google Patents.
US3355439A
Expired / Lapsed
US
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Polymers of coordination complexes of vinylphosphines and metal salts, and process for preparing same
Assignee: Union Carbide Corp
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Filing: 1963-10-30
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Granted: 1967-11-28
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Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Frank J Welch
- 👤 Jr Herbert J Paxton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5013; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A NORMALLY SOLID ADDITION POLYMER OF A COORDINATION COMPLEX REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
13 words
A NORMALLY SOLID ADDITION POLYMER OF A COORDINATION COMPLEX REPRESENTED BY THE FORMULA
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |