US2938875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyepoxy-substituted aromatic compounds and polymers
Assignee: Shell USA Inc
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Filing: 1956-11-19
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Granted: 1960-05-31
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Robert W Martin
- 👤 Holm Roy Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C07D303/04; C08; C08G; C08G59/00; C08G59/02; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/32; C08G59/3218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
POLYEPOXIDES COMPRISING AROMATIC COMPOUNDS OF THE GROUP CONSISTING OF MONOMERIC ARMATIC HYDROCARBONS AND HALO-SUBSTITUTED AROMATIC HYDROCARBONS WHICH ARE SUBSTITURED ON AT LEAST ONE AROMATIC RING CARBON ATOM WITH A SATURATED VIC-EXPOXYHYDROCARBYL RADICAL WHEREIN THE EPOXY GROUP IS AT LEAST ONE CARBON ATOM REMOVED FROM THE SAID RING CARBON ATOM, AND ARE SUBSTITUTED ON AT LEAST ONE OTHER AROMATIC RING CARBON ATOM WITH A SATURATED VIC-EPOXYHYDROCARBYL RADICAL.
Claim 2
Dependent Claim
66 words
POLYEPOXIDES COMPRISING AROMATIC COMPOUNDS OF THE GROUP CONSISTING OF MONOMERIC ARMATIC HYDROCARBONS AND HALO-SUBSTITUTED AROMATIC HYDROCARBONS WHICH ARE SUBSTITURED ON AT LEAST ONE AROMATIC RING CARBON ATOM WITH A SATURATED VIC-EXPOXYHYDROCARBYL RADICAL WHEREIN THE EPOXY GROUP IS AT LEAST ONE CARBON ATOM REMOVED FROM THE SAID RING CARBON ATOM, AND ARE SUBSTITUTED ON AT LEAST ONE OTHER AROMATIC RING CARBON ATOM WITH A SATURATED VIC-EPOXYHYDROCARBYL RADICAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |