US2987372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quartz micro-tubing manufacture
Assignee: Monsanto Chemicals Ltd
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Filing: 1959-02-09
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Granted: 1961-06-06
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Expires: 1979-02-09
Abstract
No abstract record available.
Inventors
- 👤 Richard G Olt
- 👤 Four Howard R Du
- 👤 Marion I Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:04
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B23/00; C03B23/04; C03B23/047; C03B37/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF MANUFACTURING QUARTZ MICRO-TUBING OF OUTER DIAMETER DM AND INNER DIAMETER DM WHICH COMPRISES ADVANCING RECTILINEARLY A LENGTH OF QUARTZ-STOCK TUBING OF OUTER DIAMETER DT AND INNER DIAMETER DT AT A VELOCITY VT TO FUSION ZONE, THE SAID QUARTZ-STOCK TUBING BEING SEALED AT ITS REAR END AND HAVING A DRAWING FIBER SEALED IN ITS FORWARD END, FUSING SAID ADVANCING STOCK TUBING IN SAID FUSION ZONE AT A POINT JUST ABOVE ITS SEALED FORWARD END, DRAWING SAID FIBER FROM SAID FUSION ZONE THEREBY ATTENUATING SAID STOCK-TUBING, AND DRAWING SAID ATTENUATED STOCK-TUBING AT A VELOCITY VM, THE SAID VELOCITIES AND THE SAID DIAMETERS HAVING THE FOLLOWING RELATIONSHIP
Claim 2
Independent Claim
107 words
THE METHOD OF MANUFACTURING QUARTZ MICRO-TUBING OF OUTER DIAMETER DM AND INNER DIAMETER DM WHICH COMPRISES ADVANCING RECTILINEARLY A LENGTH OF QUARTZ-STOCK TUBING OF OUTER DIAMETER DT AND INNER DIAMETER DT AT A VELOCITY VT TO FUSION ZONE, THE SAID QUARTZ-STOCK TUBING BEING SEALED AT ITS REAR END AND HAVING A DRAWING FIBER SEALED IN ITS FORWARD END, FUSING SAID ADVANCING STOCK TUBING IN SAID FUSION ZONE AT A POINT JUST ABOVE ITS SEALED FORWARD END, DRAWING SAID FIBER FROM SAID FUSION ZONE THEREBY ATTENUATING SAID STOCK-TUBING, AND DRAWING SAID ATTENUATED STOCK-TUBING AT A VELOCITY VM, THE SAID VELOCITIES AND THE SAID DIAMETERS HAVING THE FOLLOWING RELATIONSHIP
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |