Patent US3975620A successfully refreshed from Google Patents.
Patent US3159475A successfully refreshed from Google Patents.
US3159475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming fibers
Assignee: Johns Manville Corp
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Filing: 1955-05-05
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Granted: 1964-12-01
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Expires: 1975-05-05
Abstract
No abstract record available.
Inventors
- 👤 Alwin B Chen
- 👤 Paul J Desnoyers
- 👤 Adolph W Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:30
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/05; C03B37/055
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
APPARATUS FOR CONVERTING A MOLTEN RAW MATERIAL INTO FIBERS COMPRISING MEANS FOR DELIVERING A STREAM OF SAID MATERIAL, FIBERIZING MEANS INCLUDING AN ANNULAR FIBERIZING SURFACE, AND A DISTRIBUTOR ROLL HAVING A PHERIPHERY POSITIONED TO RECEIVE SAID STREAM AND DISCHARGE SAID MATERIAL ONTO SAID FIBERIZING SURFACE, SAID PERIPHERY INCLUDING AN OUTWARDLY PROJECTING ANNULAR RIDGE LOCATED AT AN INTERMEDIATE PORTION THEREOF TO INTERCEPT AND SPREAD SAID STREAM, AND AN ANNULAR GROOVE-LIKE AREA AT EACH SIDE OF SAID RIDGE.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |