Patent US2906397A successfully refreshed from Google Patents.
Patent US3132045A successfully refreshed from Google Patents.
US3132045A
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Method of impregnating film materials with ammonium bromide
Assignee: Dow Chemical Co
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Filing: 1961-10-26
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Granted: 1964-05-05
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Expires: 1981-10-26
Abstract
No abstract record available.
Inventors
- 👤 Richard L Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:14
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/126; C08J2325/00; C08J2423/00; C08J2423/26; C08J2423/28; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF TREATING AN ALKENYL AROMATIC RESINOUS BODY COMPRISING EXPOSING SAID RESINOUS BODY TO AN ATOMSPHERE OF HYDROGEN BROMIDE AND SUBSEQUENTLY EXPOSING SAID TREATED ALKENYL AROMATIC RESINOUS BODY CONTAINING HYDROGEN BROMIDE TO AN ATMOSPHERE CONTAINING AMMONIA TO FORM WITHIN SAID BODY FROM ABOUT 4 TO 10 GRAMS OF AMMONIUM BROMIDE PER HUNDRED GRAMS OF ALKENYL AROMATIC RESIN.
Claim 2
Independent Claim
58 words
THE METHOD OF TREATING AN ALKENYL AROMATIC RESINOUS BODY COMPRISING EXPOSING SAID RESINOUS BODY TO AN ATOMSPHERE OF HYDROGEN BROMIDE AND SUBSEQUENTLY EXPOSING SAID TREATED ALKENYL AROMATIC RESINOUS BODY CONTAINING HYDROGEN BROMIDE TO AN ATMOSPHERE CONTAINING AMMONIA TO FORM WITHIN SAID BODY FROM ABOUT 4 TO 10 GRAMS OF AMMONIUM BROMIDE PER HUNDRED GRAMS OF ALKENYL AROMATIC RESIN.
References Cited (Backward Citations)
US2676946A
Cited
US2676927A
Cited
US3001954A
Cited
US3050424A
Cited
US3027272A
Cited
US3050476A
Cited
US3058927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |