US3940324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of decomposing calcium carbonate
Assignee: Individual
•
Filing: 1974-12-04
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Granted: 1976-02-24
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Expires: 1994-12-04
Abstract
Abstract The method consists of decomposing calcium carbonate into carbon dioxide gas and calcium oxide under the effects of an ionizing radiation dose at a minimum power of absorbed radiation equal to 0.5 Mrad/s. The advantageous feature of the method resides in that it takes much less time to occur, viz., a few minutes and even seconds rather than several scores of hours, and requires no vacuum to occur.
Inventors
- 👤 administratrix by Khaya Semenovna Boguslavskaya
- 👤 Vasily Andreevich Glukhikh
- 👤 Solomon Isaakovich Danjushevsky
- 👤 Georgy Borisovich Egorov
- 👤 Raisa Andreevna Zozulya
- 👤 Jury Vasilievich Nikiforov
- 👤 Rafail Manusovich Nudelman
- 👤 Alexandr Mikhailovich Khomyakov
- 👤 Yanetta Markovna Tseitlin
- 👤 Evgeny Grigorievich Komar, deceased
- 👤 Administratrix By Khaya Semenovna Boguslavskaya
- 👤 administratrix by Olga Efremova Komar
- 👤 administratrix by Alexandr Eugenievich Komar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:40
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; B01J19/082; B01J19/12; B01J19/122; C; C01; C01B; C01B32/00; C01B32/50; C01F; C01F11/00; C01F11/02; C01F11/04; C01F11/06; C04; C04B; C04B2/00; C04B2/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
34 words
A method of decomposing calcium carbonate into calcium oxide and carbon dioxide gas, comprising exposing calcium carbonate to an ionizing radiation at a power of the absorbed radiation dose of at least 0.5 Mrad/s.
Claim 2
Independent Claim
34 words
A method of decomposing calcium carbonate into calcium oxide and carbon dioxide gas, comprising exposing calcium carbonate to an ionizing radiation at a power of the absorbed radiation dose of at least 0.5 Mrad/s.
Claim 3
Dependent Claim
30 words
The method as claimed in claim 1, wherein calcium carbonate is exposed to an ionizing radiation at a power of the absorbed radiation dose of from 0.5 to 10 Mrad/s.
Claim 4
Dependent Claim
28 words
The method as claimed in claim 1, wherein calcium carbonate is exposed to an ionizing radiation at a power of the absorbed radiation dose of over 10 Mrad/s.
Claim 5
Dependent Claim
26 words
The method as claimed in claim 1, wherein the calcium carbonate source is selected from the group consisting essentially of limestone, and chemically pure calcium carbonate.
Claim 6
Dependent Claim
20 words
The method as claimed in claim 1, wherein said method conducted at atmospheric pressure and without the addition of heat.
Claim 7
Dependent Claim
15 words
The method as claimed in claim 5, wherein said method is conducted at ambient temperature.
References Cited (Backward Citations)
US3803010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |