US3266880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of flat glass
Assignee: Pilkington Group Ltd
•
Filing: 1962-03-26
•
Granted: 1966-08-16
•
Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Lionel A B Pilkington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:27
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/04; C03B18/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF PRODUCING FLAT GLASS IN RIBBON FROM, COMPRISING ESTABLISHING A BUOYANT LAYER OF MOLTEN GLASS ON A BATH OF MOLTEN MATEL WHILE CONFINING SAID LAYER BETWEEN NON-WEETABLE SURFACE EXTENDING ALONG SAID BATH AND IN NON-WEETING CONTACT WITH THE EDGES OF THE GLASS ADVANCING THE BUOYANT LAYER ALONG THE BATH WHILE MAINTAINING SAID NON-WEETABLE CONFINING EDGE CONTACT WITH SAID SURFACES, AND THEN COOLING THE LAYER SUFFICIENTLY TO ENABLE IT TO BE TAKEN IN RIBBON FORM UNHARMED FROM THE BATH OF MOLTEN METAL.
Claim 2
Independent Claim
83 words
A METHOD OF PRODUCING FLAT GLASS IN RIBBON FROM, COMPRISING ESTABLISHING A BUOYANT LAYER OF MOLTEN GLASS ON A BATH OF MOLTEN MATEL WHILE CONFINING SAID LAYER BETWEEN NON-WEETABLE SURFACE EXTENDING ALONG SAID BATH AND IN NON-WEETING CONTACT WITH THE EDGES OF THE GLASS ADVANCING THE BUOYANT LAYER ALONG THE BATH WHILE MAINTAINING SAID NON-WEETABLE CONFINING EDGE CONTACT WITH SAID SURFACES, AND THEN COOLING THE LAYER SUFFICIENTLY TO ENABLE IT TO BE TAKEN IN RIBBON FORM UNHARMED FROM THE BATH OF MOLTEN METAL.
References Cited (Backward Citations)
US1489852A
Cited
US710357A
Cited
US1469383A
Cited
US1548435A
Cited
US1759225A
Cited
US2618012A
Cited
US2668988A
Cited
US3134660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |