US3410335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coolers for mixtures of gases and solid particles
Assignee: Svenska Carbon Black Sjotullsgatan AB
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Filing: 1967-01-04
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Granted: 1968-11-12
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Expires: 1987-01-04
Abstract
No abstract record available.
Inventors
- 👤 Malmstrom Lennart Hugo
- 👤 Malmstrom Carl Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
B; B01; B01D; B01D51/00; B01D51/10; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; F; F28; F28D; F28D7/00; F28D7/16; F28D7/1607; F28F; F28F13/00; F28F13/06; F28F13/12; F28F13/125; F28F19/00; F28F19/008; F28G; F28G1/00; F28G1/08; F28F2265/00; F28F2265/32
Claims Analysis
Total Claims: 0
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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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |