US3361684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting resin matrix containing boron compounds of specific size distribution and method of making
Assignee: WERNER H KREIDL
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Filing: 1966-01-18
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Granted: 1968-01-02
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Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Chvatal Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:51
CPC Classifications
G; G21; G21F; G21F1/00; G21F1/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
IN A METHOD OF PRODUCING A SHIELDING MATERIAL FOR PROTECTION AGAINST BIOLOGICALLY DAMAGING NEUTRON RADIATION, THE STEPS COMPRISING MIXING COMMINUTED PARTICLES OF AT LEAST ONE MEMBER OF THE GROUP OF SUBSTANCES CONSISTING OF LITHIUM OCTOBORATE, LITHIUM METABORATE, PURIFIED COLEMANITE AND PURIFIED PANDERMITE, SAID SUBSTANCES HAVING LESS THAN 1% BY WEIGHT OF ELEMENTS EMITTING SECONDARY GAMMA RADIATION, WITH BETWEEN ABOUT 10 TO 25% BY WEIGHT OF A LIQUID SYNTHETIC RESIN OF THE THERMOSETTING TYPE TO PRODUCE A FORMABLE MIXTURE, SAID PARTICLES COMPRISING ABOUT 50 TO 70% BY WEIGHT OF A COARSE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 1 TO 3 MM. AND ABOUT 30 TO 50% BY WEIGHT OF A FINE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 0.01 TO 0.1 MM., MOULDING SAID MIXTURE INTO THE DESIRED SHAPE AND ALLOWING IT TO SET, WHEREBY A SPACE DISTRIBUTION OF SAID COMMINUTED PARTICLES WITHIN SAID RESIN MATRIX IS OBTAINED WHICH YIELDS A SHIELDING MATERIAL OF HIGHEST NEUTRON-ABSORPTION CROSS SECTION.
Claim 2
Dependent Claim
162 words
IN A METHOD OF PRODUCING A SHIELDING MATERIAL FOR PROTECTION AGAINST BIOLOGICALLY DAMAGING NEUTRON RADIATION, THE STEPS COMPRISING MIXING COMMINUTED PARTICLES OF AT LEAST ONE MEMBER OF THE GROUP OF SUBSTANCES CONSISTING OF LITHIUM OCTOBORATE, LITHIUM METABORATE, PURIFIED COLEMANITE AND PURIFIED PANDERMITE, SAID SUBSTANCES HAVING LESS THAN 1% BY WEIGHT OF ELEMENTS EMITTING SECONDARY GAMMA RADIATION, WITH BETWEEN ABOUT 10 TO 25% BY WEIGHT OF A LIQUID SYNTHETIC RESIN OF THE THERMOSETTING TYPE TO PRODUCE A FORMABLE MIXTURE, SAID PARTICLES COMPRISING ABOUT 50 TO 70% BY WEIGHT OF A COARSE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 1 TO 3 MM. AND ABOUT 30 TO 50% BY WEIGHT OF A FINE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 0.01 TO 0.1 MM., MOULDING SAID MIXTURE INTO THE DESIRED SHAPE AND ALLOWING IT TO SET, WHEREBY A SPACE DISTRIBUTION OF SAID COMMINUTED PARTICLES WITHIN SAID RESIN MATRIX IS OBTAINED WHICH YIELDS A SHIELDING MATERIAL OF HIGHEST NEUTRON-ABSORPTION CROSS SECTION.
Claim 3
Dependent Claim
114 words
SHIELDING MATERIAL FOR USE IN PROTECTION AGAINST BIOLOGICALLY DAMAGING NEUTRON RADIATION, COMPRISING A MIXTURE OF ABOUT 10 TO 25% BY WEIGHT OF A SYNTHETIC RESIN OF THE THERMOSETTING TYPE WITH COMMINUTED PARTICLES OF AT LEAST ONE MEMBER OF THE GROUP OF SUBSTANCES CONSISTING OF LITHIUM OCTOBORATE, LITHIUM METABORATE, PURIFIED COLEMANITE AND PURIFIED PANDERMITE, SAID PARTICLES HAVING LESS THAN 1% BY WEIGHT OF ELEMENTS EMITTING SECONDARY GAMMA RADIATION AND CONTAINING ABOUT 50 TO 70% BY WEIGHT OF A COARSE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 1 TO 3 MM. AND ABOUT 30 TO 50% BY WEIGHT OF A FINE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 0.01 TO 0.1 MM.
Claim 4
Dependent Claim
114 words
SHIELDING MATERIAL FOR USE IN PROTECTION AGAINST BIOLOGICALLY DAMAGING NEUTRON RADIATION, COMPRISING A MIXTURE OF ABOUT 10 TO 25% BY WEIGHT OF A SYNTHETIC RESIN OF THE THERMOSETTING TYPE WITH COMMINUTED PARTICLES OF AT LEAST ONE MEMBER OF THE GROUP OF SUBSTANCES CONSISTING OF LITHIUM OCTOBORATE, LITHIUM METABORATE, PURIFIED COLEMANITE AND PURIFIED PANDERMITE, SAID PARTICLES HAVING LESS THAN 1% BY WEIGHT OF ELEMENTS EMITTING SECONDARY GAMMA RADIATION AND CONTAINING ABOUT 50 TO 70% BY WEIGHT OF A COARSE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 1 TO 3 MM. AND ABOUT 30 TO 50% BY WEIGHT OF A FINE PORTION OF AN AVERAGE GRAIN SIZE OF FROM ABOUT 0.01 TO 0.1 MM.
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |