US3524206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for melting thermoplastic materials
Assignee: Corning Glass Works
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Filing: 1968-04-08
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Granted: 1970-08-18
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Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 George B Boettner
- 👤 Edward F Fanning
- 👤 Ralph E Miller
- 👤 Frank W Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02; C03B5/027; C03B5/0275; C03B5/021; C03B5/12; C03B5/16; C03B5/18; C03B5/183; C03B5/185; C03B5/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1820248A
Cited
US2186718A
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US2263549A
Cited
US2283188A
Cited
US2744152A
Cited
US2993079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |