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US3483167A
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Viscosity control in the chain extension of linear polyurethanes using a combination of chain extenders and a chain-stopper
Assignee: Glanzstoff AG
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Filing: 1967-11-29
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Granted: 1969-12-09
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Expires: 1987-11-29
Abstract
No abstract record available.
Inventors
- 👤 Erwin Sommer
- 👤 Jost-Henrich Manegold
- 👤 Helmut Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2621166A
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US2929800A
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US2933477A
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US3044987A
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FR1344657A
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US3305533A
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US3198578A
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GB1005047A
Cited
US3384624A
Cited
US3401133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |