US2733166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of internally coating lamp
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:08
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF PRODUCING A REFLECTIVE COATING ON A SELECTED PORTION OF THE INNER SURFACE OF A HOLLOW GLASS ARTICLE HAVING A SINGLE OPEN NECK END, WHICH METHOD COMPRISES INTRODUCING INTO THE ARTICLE A PREDETERMINED QUANTITY OF GRANULAR MASKING MATERIAL COMPRISING FINE GLASS BEADS HEATED TO A TEMPERATURE OF AT LEAST APPROXIMATELY 140* C. BUT BELOW THE SOFTENING TEMPERATURE THEREOF, AGITATING THE ARTICLE TO DISTRIBUTE THE SAID GLASS BEADS SO AS TO FORM AN EVEN MASKING-OFF LINE AROUND THE ARTICLE, EXHAUSTING SAID ARTICLE TO PRODUCE THE SAID GLASS IN HEATING A QUANTITY OF A VAPORIZABLE METALLIC COATING MATERIAL WITHIN THE SAID ARTICLE, WHILE THE SAID BEADS ARE MAINTAINED IN THEIR SAID HEATED CONDITION, TO THEREBY FLASH THE SAID COATING MATERIAL ONTO THE EXPOSED PORTION OF THE INNER SURFACE OF THE ARTICLE UNMASKED BY THE SAID GLASS BEADS, AND THEREAFTER REMOVING THE GLASS BEADS FROM THE SAID ARTICLE.
Claim 2
Independent Claim
147 words
THE METHOD OF PRODUCING A REFLECTIVE COATING ON A SELECTED PORTION OF THE INNER SURFACE OF A HOLLOW GLASS ARTICLE HAVING A SINGLE OPEN NECK END, WHICH METHOD COMPRISES INTRODUCING INTO THE ARTICLE A PREDETERMINED QUANTITY OF GRANULAR MASKING MATERIAL COMPRISING FINE GLASS BEADS HEATED TO A TEMPERATURE OF AT LEAST APPROXIMATELY 140* C. BUT BELOW THE SOFTENING TEMPERATURE THEREOF, AGITATING THE ARTICLE TO DISTRIBUTE THE SAID GLASS BEADS SO AS TO FORM AN EVEN MASKING-OFF LINE AROUND THE ARTICLE, EXHAUSTING SAID ARTICLE TO PRODUCE THE SAID GLASS IN HEATING A QUANTITY OF A VAPORIZABLE METALLIC COATING MATERIAL WITHIN THE SAID ARTICLE, WHILE THE SAID BEADS ARE MAINTAINED IN THEIR SAID HEATED CONDITION, TO THEREBY FLASH THE SAID COATING MATERIAL ONTO THE EXPOSED PORTION OF THE INNER SURFACE OF THE ARTICLE UNMASKED BY THE SAID GLASS BEADS, AND THEREAFTER REMOVING THE GLASS BEADS FROM THE SAID ARTICLE.
References Cited (Backward Citations)
US2569852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |