Patent US3225007A successfully refreshed from Google Patents.
US3225007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane compositions cured with organic peroxides
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1962-10-08
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Granted: 1965-12-21
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Elbert E Gruber
- 👤 Orin C Keplinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:23
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A COMPOSITION COMPRISING A CURABLE RUBBERY POLYURETHANE HAVING ACTIVATABLE METHYLENE GROUPS AND BEING SELECTED FROM THE GROUP CONSISTING OF RUBBERY POLYESTERURETHANES AND RUBBERY POLYETHERURETHANES AND, AS A CRUING AGENT FOR SAID RUBBERY POLYURETHANE, AND ORGANIC PEROXIDE FREE OF ACYL GROUPS AND HAVING A TERTIARY ALIPHATIC CARBON ATOM ATTACHED TO A PEROXIDE OXYGEN ATOM, WHICH CARBON ATOM IS NOT DIRECTLY CONNECTED TO ANY OTHER OXYGEN ATOM.
Claim 2
Dependent Claim
65 words
A COMPOSITION COMPRISING A CURABLE RUBBERY POLYURETHANE HAVING ACTIVATABLE METHYLENE GROUPS AND BEING SELECTED FROM THE GROUP CONSISTING OF RUBBERY POLYESTERURETHANES AND RUBBERY POLYETHERURETHANES AND, AS A CRUING AGENT FOR SAID RUBBERY POLYURETHANE, AND ORGANIC PEROXIDE FREE OF ACYL GROUPS AND HAVING A TERTIARY ALIPHATIC CARBON ATOM ATTACHED TO A PEROXIDE OXYGEN ATOM, WHICH CARBON ATOM IS NOT DIRECTLY CONNECTED TO ANY OTHER OXYGEN ATOM.
References Cited (Backward Citations)
US3036042A
Cited
US2962183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |