US3314909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linking copolymers containing n-methylcarbamyl radicals
Assignee: Individual
•
Filing: 1965-06-09
•
Granted: 1967-04-18
•
Expires: 1985-06-09
Abstract
No abstract record available.
Inventors
- 👤 Robert E Whitfield
- 👤 Howard L Needles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR PREPARING A CROSS-LINKED POLYMER WHICH COMPRISES HEATING AT ABOUT 50-100*C. AN AQUEOUS COMPOSITION CONTAINING: (I) A COPOLYMER OF: (A) A POLYMERIZABLE ETHYLINCALLY UNSATURATED MONOMER CONTAINING THE N-METHYLCARBAMYL RADICAL
Claim 2
Dependent Claim
31 words
A PROCESS FOR PREPARING A CROSS-LINKED POLYMER WHICH COMPRISES HEATING AT ABOUT 50-100*C. AN AQUEOUS COMPOSITION CONTAINING: (I) A COPOLYMER OF: (A) A POLYMERIZABLE ETHYLINCALLY UNSATURATED MONOMER CONTAINING THE N-METHYLCARBAMYL RADICAL
References Cited (Backward Citations)
US3082178A
Cited
US3168500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |