US2959507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaving glass sheets and new articles of manufacture thereby obtained
Assignee: Glaces de Boussois SA
•
Filing: 1957-05-31
•
Granted: 1960-11-08
•
Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Long Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:19
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/02; C03B33/0207; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10981; C03B33/09; C03C; C03C17/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1059; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24628
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR PRODUCING RELATIVELY THIN GLASS SHEETS FROM A RELATIVELY THICK GLASS SHEET HAVING SUBSTANTIALLY PARALLEL OPPOSED SURFAES AND EDGES, SAID EDGES HAVING VERY SUBSTANTIALLY LESS AREA THAN SAID PARALLEL OPPOSED SURFACES, WHICH PROCESS COMPRISES SCORING SAID EDGES, GENERALLY PARALLEL TO SAID OPPOSED SURFACES OF SAID THICK GLASS SHEET, THEREAFTER SUBJECTING THE THUS SCORED THICK GLASS SHEET TO HEATING, AND THEN TO COOLING, TO CLEAVE SAID THICK GLASS SHEET INTO SAID THIN GLASS SHEETS, SAID SCORING BEING SUFFICIENT, IN COMBINATION WITH HEATING AND COOLING, TO INITATE FRACTURE OF SAID THICK GLASS SHEETS IN A PLANE GENERALLY PARALLEL TO SAID PARALLEL OPPOSED SURFACES.
Claim 2
Dependent Claim
103 words
A PROCESS FOR PRODUCING RELATIVELY THIN GLASS SHEETS FROM A RELATIVELY THICK GLASS SHEET HAVING SUBSTANTIALLY PARALLEL OPPOSED SURFAES AND EDGES, SAID EDGES HAVING VERY SUBSTANTIALLY LESS AREA THAN SAID PARALLEL OPPOSED SURFACES, WHICH PROCESS COMPRISES SCORING SAID EDGES, GENERALLY PARALLEL TO SAID OPPOSED SURFACES OF SAID THICK GLASS SHEET, THEREAFTER SUBJECTING THE THUS SCORED THICK GLASS SHEET TO HEATING, AND THEN TO COOLING, TO CLEAVE SAID THICK GLASS SHEET INTO SAID THIN GLASS SHEETS, SAID SCORING BEING SUFFICIENT, IN COMBINATION WITH HEATING AND COOLING, TO INITATE FRACTURE OF SAID THICK GLASS SHEETS IN A PLANE GENERALLY PARALLEL TO SAID PARALLEL OPPOSED SURFACES.
References Cited (Backward Citations)
US1443731A
Cited
US1692619A
Cited
US1748080A
Cited
GB332485A
Cited
US1980970A
Cited
US1981703A
Cited
US2125922A
Cited
US2351033A
Cited
US2378091A
Cited
US2470461A
Cited
US2584851A
Cited
DE860264C
Cited
FR1098579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |