Patent US2077309A successfully refreshed from Google Patents.
US2900274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing glass filaments with a coating of silver
Assignee: Owens Corning
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Filing: 1956-12-24
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Granted: 1959-08-18
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harry B Whitehurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:06
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/04; C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; C03C25/46; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2956
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A METHOD OF COATING INDIVIDUAL GLASS FILAMENTS IN A STRAND WITH A SUBSTANTIALLY CONTINUOUS COATING OF METAL COMPRISING ADVANCING A STRAND ALONG AN ESTABLISHED PATH, SUSPENDING A GLOBULE OF A SOLUTION OF SILVER NITRATE FROM AN APPLICATOR, PASSING THE STRAND THROUGH THE SUSPENDED GLOBULE OF SILVER NITRATE, SUSPENDING A GLOBULE OF HYDRAZINE SULFATE SOLUTION FROM A SECOND APPLICATOR, DIRECTING THE ADVANCING STRAND THROUGH THE GLOBULE OF HYDRAZINE SULFATE, BOTH THE SOLUTION OF SILVER NITRATE AND HYDRAZINE SULFATE BEING DISTRIBUTED THROUGHOUT THE INTERSTICES OF SIAD STRAND BY CAPILLARY ACTION IN SUCH QUANTITIES AS TO ALLOW THE REACTION TO GO TO COMPLETION, AND ALLOWING THE REDUCTION REACTION TO PROCEED TO COMPLETION TO EFFECT A SUBSTANTIALLY CONTINUOUS DEPOSIT OF SILVER UPON THE SURFACES OF THE FILAMENTS OF THE STRAND.
Claim 2
Independent Claim
126 words
A METHOD OF COATING INDIVIDUAL GLASS FILAMENTS IN A STRAND WITH A SUBSTANTIALLY CONTINUOUS COATING OF METAL COMPRISING ADVANCING A STRAND ALONG AN ESTABLISHED PATH, SUSPENDING A GLOBULE OF A SOLUTION OF SILVER NITRATE FROM AN APPLICATOR, PASSING THE STRAND THROUGH THE SUSPENDED GLOBULE OF SILVER NITRATE, SUSPENDING A GLOBULE OF HYDRAZINE SULFATE SOLUTION FROM A SECOND APPLICATOR, DIRECTING THE ADVANCING STRAND THROUGH THE GLOBULE OF HYDRAZINE SULFATE, BOTH THE SOLUTION OF SILVER NITRATE AND HYDRAZINE SULFATE BEING DISTRIBUTED THROUGHOUT THE INTERSTICES OF SIAD STRAND BY CAPILLARY ACTION IN SUCH QUANTITIES AS TO ALLOW THE REACTION TO GO TO COMPLETION, AND ALLOWING THE REDUCTION REACTION TO PROCEED TO COMPLETION TO EFFECT A SUBSTANTIALLY CONTINUOUS DEPOSIT OF SILVER UPON THE SURFACES OF THE FILAMENTS OF THE STRAND.
Claim 3
Dependent Claim
33 words
THE METHOD OF CLAIM 1 WHEREIN THE ADVANCING STRAND IS HEATED TO FROM 485* C. TO 650* C. PRIOR TO APPLICATION OF THE SOLUTION OF SILVER NITRATE TO PROVIDE HEAT CLEANED GLASS SURFACES.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |