Patent US2729604A successfully refreshed from Google Patents.
US2729604A
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Lanthanum oxychloride phosphors and their preparation
Assignee: EIDP Inc
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Filing: 1953-03-23
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Granted: 1956-01-03
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Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Swindells Frank Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7701; H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A LATHANUM OXYCHLORIDE PHOSPHUR ACITVATED BY A METAL TAKEN FROM THE GROUP CONSISTING OF ANTIMONY AND BISMUTH.
Claim 2
Dependent Claim
17 words
A LATHANUM OXYCHLORIDE PHOSPHUR ACITVATED BY A METAL TAKEN FROM THE GROUP CONSISTING OF ANTIMONY AND BISMUTH.
References Cited (Backward Citations)
US2567769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |