Patent US4818169A successfully refreshed from Google Patents.
US3271122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming glass fibers
Assignee: PPG Industries Inc
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Filing: 1959-11-25
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Granted: 1966-09-06
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Expires: 1979-11-25
Abstract
No abstract record available.
Inventors
- 👤 Donald W Denniston
- 👤 Clarence H Helbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:18
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/0203; C03B37/0213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF FORMING GLASS FIBERS WHICH COMPRISES DRAWING A PLURALITY OF FIBERS FROM A SUPPLY OF MOLTEN GLASS, APPLYING A COATING TO THE FIBERS, ADVANCING FIBERS TO A COLLECTING POSITION, IMPARTING RAPID, SIDEWISE OSCILLATONS TO THE FIBERS THEREBY REMOVING PORTIONS OF THE COATING FROM THE FIBERS, SURROUNDING THE FIBERS WITH AN ATMOSPHERE MOVING IN THE DIRECTION OF TRAVEL OF THE FIBERS AND CONTINUING MOVEMENT OF THIS ATMOSPHERE IN THE SAME GENERAL DIRECTION BEYOND THE COLLECTING POSITION THEREBY CARRYING THE COATING PARTICLE REMOVED FROM THE FIBERS AWAY FROM THE SUPPLY OF MOLTEN GLASS.
Claim 2
Independent Claim
93 words
A METHOD OF FORMING GLASS FIBERS WHICH COMPRISES DRAWING A PLURALITY OF FIBERS FROM A SUPPLY OF MOLTEN GLASS, APPLYING A COATING TO THE FIBERS, ADVANCING FIBERS TO A COLLECTING POSITION, IMPARTING RAPID, SIDEWISE OSCILLATONS TO THE FIBERS THEREBY REMOVING PORTIONS OF THE COATING FROM THE FIBERS, SURROUNDING THE FIBERS WITH AN ATMOSPHERE MOVING IN THE DIRECTION OF TRAVEL OF THE FIBERS AND CONTINUING MOVEMENT OF THIS ATMOSPHERE IN THE SAME GENERAL DIRECTION BEYOND THE COLLECTING POSITION THEREBY CARRYING THE COATING PARTICLE REMOVED FROM THE FIBERS AWAY FROM THE SUPPLY OF MOLTEN GLASS.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |