US3307929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing glass
Assignee: US Philips Corp
•
Filing: 1964-05-27
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Granted: 1967-03-07
•
Expires: 1984-05-27
Abstract
No abstract record available.
Inventors
- 👤 Trap Hendrikus Johan Lodewijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:52
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/145; C03C4/00; C03C4/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A METHOD OF PREPARING GLASS WHICH CONTAINS FERROUS IONS IN ADDITION TO FERRIC IONS, CHARACTERIZED IN THAT FOR THIS PURPOSE A MIXTURE OF THE FOLLOWING COMPOSITION IN MOL PERCENT INDICATED AS OXIDES, THE TOTAL AMOUNT OF FERROUS OXIDE AND FERRIC OXIDE BEING CALCULATED AS FE3O4:
Claim 2
Independent Claim
45 words
A METHOD OF PREPARING GLASS WHICH CONTAINS FERROUS IONS IN ADDITION TO FERRIC IONS, CHARACTERIZED IN THAT FOR THIS PURPOSE A MIXTURE OF THE FOLLOWING COMPOSITION IN MOL PERCENT INDICATED AS OXIDES, THE TOTAL AMOUNT OF FERROUS OXIDE AND FERRIC OXIDE BEING CALCULATED AS FE3O4:
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |