US3347650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant coating for glassware molds and equipment
Assignee: OI Glass Inc
•
Filing: 1963-07-30
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Granted: 1967-10-17
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Marvin L Barkhau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
C; C03; C03B; C03B40/00; C03B40/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
A METHOD OF LUBRICATING THE CAST IRON SURFACES OF A GLASSWARE MOLD THAT COME INTO INTERMITTENT CONTACT WITH MOLTEN GLASS, COMPRISING APPLYING A LEAD COMPOUND SELECTED FROM THE GROUP CONSISTING OF LEAD MONOXIDE AND AN ORGANIC LEAD COMPOUND CAPABLE OF PYROLYSIS TO LEAD OXIDE TO THE SAID CAST IRON SURFACE AND SUBJECTING SAID SURFACE TO FORM AN ADHERENT COATING COMPRISING LEAD OXIDE.
Claim 2
Independent Claim
62 words
A METHOD OF LUBRICATING THE CAST IRON SURFACES OF A GLASSWARE MOLD THAT COME INTO INTERMITTENT CONTACT WITH MOLTEN GLASS, COMPRISING APPLYING A LEAD COMPOUND SELECTED FROM THE GROUP CONSISTING OF LEAD MONOXIDE AND AN ORGANIC LEAD COMPOUND CAPABLE OF PYROLYSIS TO LEAD OXIDE TO THE SAID CAST IRON SURFACE AND SUBJECTING SAID SURFACE TO FORM AN ADHERENT COATING COMPRISING LEAD OXIDE.
Claim 3
Dependent Claim
30 words
AN ARTICLE HAVING A CAST IRON SURFACE WHICH COMES INTO CONTACT WITH MOLTEN GLASS, SAID SURFACE HAVING A FILM COMPRISING LEAD OXIDE FORMED THEREON AND TENACIOUSLY BONDED TO SAID SURFACE.
Claim 4
Dependent Claim
30 words
AN ARTICLE HAVING A CAST IRON SURFACE WHICH COMES INTO CONTACT WITH MOLTEN GLASS, SAID SURFACE HAVING A FILM COMPRISING LEAD OXIDE FORMED THEREON AND TENACIOUSLY BONDED TO SAID SURFACE.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |