US2693403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation of wet ammonia-soda crystals
Assignee: Diamond Shamrock Corp
•
Filing: 1952-01-26
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Granted: 1954-11-02
•
Expires: 1972-01-26
Abstract
No abstract record available.
Inventors
- 👤 Chester C Brumbaugh
- 👤 Robert A Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:23
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/18; Y; Y10; Y10S; Y10S198/00; Y10S198/957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE AMMONIA-SODA PROCESS FOR THE MANUFACTURE OF SODIUM CARBONATE, THE IMPROVEMENT WHICH CONSISTS IN REMOVING CRUDE SODIUM BICARBONATE CEYSTALS FROM A SLURRY COMPRISING THE SAME AND CONVEYING SAID CRYSTALS ON AND IN CONTACT WITH SURFACES CONSISTING OF HYDROPHOBIC RESINOUS ORGANIC MATERIALS TO A CONVERSION ZONE WHERE SAID CRYSTALS ARE CONVERTED TO SODIUM CARBONATE, SAID ORGANIC MATERIALS CONSISTING OF MOLECULES HAVING PREDOMINANTLY NON-POLAR GROUPS AND HAVING SKELETAL CARBON ATOMS ATTACHED TO NON-METAL SUBSTITUENTS.
Claim 2
Dependent Claim
73 words
IN THE AMMONIA-SODA PROCESS FOR THE MANUFACTURE OF SODIUM CARBONATE, THE IMPROVEMENT WHICH CONSISTS IN REMOVING CRUDE SODIUM BICARBONATE CEYSTALS FROM A SLURRY COMPRISING THE SAME AND CONVEYING SAID CRYSTALS ON AND IN CONTACT WITH SURFACES CONSISTING OF HYDROPHOBIC RESINOUS ORGANIC MATERIALS TO A CONVERSION ZONE WHERE SAID CRYSTALS ARE CONVERTED TO SODIUM CARBONATE, SAID ORGANIC MATERIALS CONSISTING OF MOLECULES HAVING PREDOMINANTLY NON-POLAR GROUPS AND HAVING SKELETAL CARBON ATOMS ATTACHED TO NON-METAL SUBSTITUENTS.
References Cited (Backward Citations)
US1312430A
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US1752210A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |