Patent US2995423A successfully refreshed from Google Patents.
US2995423A
Expired / Lapsed
US
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Crystalline zeolite m
Assignee: Union Carbide Corp
•
Filing: 1957-09-20
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Granted: 1961-08-08
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Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Donald W Breck
- 👤 Nancy A Acara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:49
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2869
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
1 words
0$0.1K2O;AL2O3:2.1$0.1SIO2:XH2O
Claim 2
Dependent Claim
1 words
0$0.1K2O;AL2O3:2.1$0.1SIO2:XH2O
Claim 3
Dependent Claim
20 words
A PROCESS FOR PREPARING A CRYSTALLINE ZEOLITE HAVING A COMPOSITION EXPRESSED IN TERMS OF MOLE RATIOS OF OXIDES, AS FOLLOWS:
Claim 4
Dependent Claim
20 words
A PROCESS FOR PREPARING A CRYSTALLINE ZEOLITE HAVING A COMPOSITION EXPRESSED IN TERMS OF MOLE RATIOS OF OXIDES, AS FOLLOWS:
References Cited (Backward Citations)
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US1965923A
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US2467215A
Cited
US2560931A
Cited
US2790512A
Cited
US2882244A
Cited
US2882243A
Cited
US2810455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |