US2628160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sculpturing glass
Assignee: Corning Glass Works
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Filing: 1951-08-30
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Granted: 1953-02-10
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Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 Stookey Stanley Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:40
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/0042; C; C03; C03C; C03C14/00; C03C14/006; C03C15/00; C03C4/00; C03C4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD OF SCULPTURING OR SELECTIVELY ETCHING A GLASS ARTICLE, WHICH COMPRISES FORMING IN A SELECTED PORTION OF THE GLASS A DESIGN COMPRISING CRYSTALLITES SELECTED FROM THE CLASS CONSISTING OF A LITHIUM SILICATE, BARIUM DISILICATE AND AN ALKALI METAL FLUORIDE, WHILE LEAVING THE REMAINING PORTION OF THE GLASS UNAFFECTED, AND TREATING THE ARTICLE WITH A DILUTE AQUEOUS SOLUTION OF HYDROFLUORIC ACID TO DISSOLVE ONE OF SUCH PORTIONS WHILE LEAVING THE OTHER PORTION SUBSTANTIALLY UNCHANGED.
Claim 2
Independent Claim
74 words
THE METHOD OF SCULPTURING OR SELECTIVELY ETCHING A GLASS ARTICLE, WHICH COMPRISES FORMING IN A SELECTED PORTION OF THE GLASS A DESIGN COMPRISING CRYSTALLITES SELECTED FROM THE CLASS CONSISTING OF A LITHIUM SILICATE, BARIUM DISILICATE AND AN ALKALI METAL FLUORIDE, WHILE LEAVING THE REMAINING PORTION OF THE GLASS UNAFFECTED, AND TREATING THE ARTICLE WITH A DILUTE AQUEOUS SOLUTION OF HYDROFLUORIC ACID TO DISSOLVE ONE OF SUCH PORTIONS WHILE LEAVING THE OTHER PORTION SUBSTANTIALLY UNCHANGED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |