US3331941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared heater
Assignee: Monsanto Co
•
Filing: 1963-12-26
•
Granted: 1967-07-18
•
Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 James W Edwards
- 👤 Richard K Shelby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:00
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; H; H05; H05B; H05B3/00; H05B3/0033; H05B3/0038; H05B3/0057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A DEVICE FOR HEATING SHEETS OF THERMOPLASTIC MATERIAL AND THE LIKE COMPRISING IN COMBINATION A HEATER HAVING AN OUTER CASING AND A HEATING ELEMENT CAPABLE OF EMITTING INFRARED RADIATION, AND A PREFERENTIAL TRANSMITTER COMPRISING ALTERNATING LAYERS OF CRYOLITE AND GERMANIUM FOR PREFERENTIALLY TRANSMITTING RADIATION WITHIN A DESIRED WAVE LENGTH RANGE.
Claim 2
Independent Claim
50 words
A DEVICE FOR HEATING SHEETS OF THERMOPLASTIC MATERIAL AND THE LIKE COMPRISING IN COMBINATION A HEATER HAVING AN OUTER CASING AND A HEATING ELEMENT CAPABLE OF EMITTING INFRARED RADIATION, AND A PREFERENTIAL TRANSMITTER COMPRISING ALTERNATING LAYERS OF CRYOLITE AND GERMANIUM FOR PREFERENTIALLY TRANSMITTING RADIATION WITHIN A DESIRED WAVE LENGTH RANGE.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |