Patent US5468245A successfully refreshed from Google Patents.
Patent US3004950A successfully refreshed from Google Patents.
US3004950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of certain organosilicon monomers and n-vinyl cyclic carbamates
Assignee: Dow Chemical Co
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Filing: 1958-12-05
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Granted: 1961-10-17
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Expires: 1978-12-05
Abstract
No abstract record available.
Inventors
- 👤 William F Tousignant
- 👤 Wilhelm E Walles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:03
CPC Classifications
C; C08; C08F; C08F230/00; C08F230/04; C08F230/08; C08F230/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COPOLYMER CONSISTING ESSENTIALLY OF (A) BETWEEN ABOUT 1 AND ABOUT 99 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A POLYMERIZED N-VINYL CYCLIC CARBAMATE MONOMER SELECTED FROM THE GROUP CONSISTING OF N-VINYL-5-METHYL-2-OXAZOLIDINONE, N-VINYL-4-METHYL-2-OXAZOLIDINONE AND MIXTURES THEREOF, AND (B) BETWEEN ABOUT 99 AND ABOUT 1 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A POLYMERIZED MONOVINYL ORGANOSILICON MONOMER COMPOSITION OF THE STRUCTURE:
Claim 2
Dependent Claim
66 words
A COPOLYMER CONSISTING ESSENTIALLY OF (A) BETWEEN ABOUT 1 AND ABOUT 99 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A POLYMERIZED N-VINYL CYCLIC CARBAMATE MONOMER SELECTED FROM THE GROUP CONSISTING OF N-VINYL-5-METHYL-2-OXAZOLIDINONE, N-VINYL-4-METHYL-2-OXAZOLIDINONE AND MIXTURES THEREOF, AND (B) BETWEEN ABOUT 99 AND ABOUT 1 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A POLYMERIZED MONOVINYL ORGANOSILICON MONOMER COMPOSITION OF THE STRUCTURE:
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |