Patent US3173759A successfully refreshed from Google Patents.
US3173759A
Expired / Lapsed
US
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Lead (iv) zeolites
Assignee: EIDP Inc
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Filing: 1962-03-05
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Granted: 1965-03-16
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Harry D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C07; C07C; C07C45/00; C07C45/27; C07C45/29; C07C45/296; C07C46/00; C07C46/02; C07C46/04; C07C51/00; C07C51/16; Y; Y10; Y10S; Y10S423/00; Y10S423/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A LEAD ZEOLITE WHEREIN LEAD IS IN THE VALENCE STATE OF FOUR.
Claim 2
Dependent Claim
12 words
A LEAD ZEOLITE WHEREIN LEAD IS IN THE VALENCE STATE OF FOUR.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |