US3291633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflectorizing glass spheres and method of making them
Assignee: Prismo Safety Corp
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Filing: 1963-05-16
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Granted: 1966-12-13
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel E Wissinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:06
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2996
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A METHOD OF MANUFACTURING INTERNALLY REFLECTING LASS SPHERES FOR USE IN RELECTORIZED MARKERS COMPRISING HEATING SMALL GLASS SPHERES OF A SIZE NORMALLY USED FOR REFLECTORIZING PURPOSES TO A TEMPERATURE SLIGHTLY BELOW THE MELTING POINT OF THE SPHERES, POURING THE HOT SPHERES INTO A COLD BONDING LIQUID, SAID LIQUID HAVING A TEMPERATURE BELOW ROOM TEMPERATURE, SAID LIQUID COMPRISING A DILUTE MIXTURE OF A TRANSPARENT BONDING AGENT WITH WATER, SAID BONDING AGENT BEING A COUPLING AGENT FOR GLASS AND SYNTHETIC PLASTIC MATERIALS, WHEREBY SAID HOT SPHERES UPON BEING IMMERSED IN SAID COLD BONDING LIQUID SIMULTANEOUSLY BECOME FRACTURED INTERNALLY AND COATED EXTERNALLY BY SAID TRANSPARENT BONDING AGENT.
Claim 2
Independent Claim
104 words
A METHOD OF MANUFACTURING INTERNALLY REFLECTING LASS SPHERES FOR USE IN RELECTORIZED MARKERS COMPRISING HEATING SMALL GLASS SPHERES OF A SIZE NORMALLY USED FOR REFLECTORIZING PURPOSES TO A TEMPERATURE SLIGHTLY BELOW THE MELTING POINT OF THE SPHERES, POURING THE HOT SPHERES INTO A COLD BONDING LIQUID, SAID LIQUID HAVING A TEMPERATURE BELOW ROOM TEMPERATURE, SAID LIQUID COMPRISING A DILUTE MIXTURE OF A TRANSPARENT BONDING AGENT WITH WATER, SAID BONDING AGENT BEING A COUPLING AGENT FOR GLASS AND SYNTHETIC PLASTIC MATERIALS, WHEREBY SAID HOT SPHERES UPON BEING IMMERSED IN SAID COLD BONDING LIQUID SIMULTANEOUSLY BECOME FRACTURED INTERNALLY AND COATED EXTERNALLY BY SAID TRANSPARENT BONDING AGENT.
Claim 3
Dependent Claim
72 words
AN INTERNALLY REFLECTING GLASS SPHERE SUITALBE FOR USE IN REFLECTORIZED MARKERS COMPRISING A SMALL GLASS SPHERE HVING A DIAMETER IN THE RANGE OF 3-100 MILS, SAID SPHERE HAVING A PLURALITY OF INTERNAL FRACTURES AND AN OUTER TRANSPARENT COATING ON SAID SPHERE OF A BONDING AGENT WHICH PREVENTS IT FROM FRACTURING INTO SMALL PIECES, SAD BONDING AGENT BONDING WITH THE GLASS SPHERE AND BEING A COUPLING AGENT FOR GLASS AND SYNTHETIC PLASTIC MATERIALS.
Claim 4
Dependent Claim
72 words
AN INTERNALLY REFLECTING GLASS SPHERE SUITALBE FOR USE IN REFLECTORIZED MARKERS COMPRISING A SMALL GLASS SPHERE HVING A DIAMETER IN THE RANGE OF 3-100 MILS, SAID SPHERE HAVING A PLURALITY OF INTERNAL FRACTURES AND AN OUTER TRANSPARENT COATING ON SAID SPHERE OF A BONDING AGENT WHICH PREVENTS IT FROM FRACTURING INTO SMALL PIECES, SAD BONDING AGENT BONDING WITH THE GLASS SPHERE AND BEING A COUPLING AGENT FOR GLASS AND SYNTHETIC PLASTIC MATERIALS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |