US3073768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron source
Assignee: Individual
•
Filing: 1960-10-17
•
Granted: 1963-01-15
•
Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 John L Richmond
- 👤 Charles E Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:09
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/02; Y; Y10; Y10S; Y10S266/00; Y10S266/905; Y10S376/00; Y10S376/90; Y10S376/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE METHOD OF MAKING A NEUTRON SOURCE WHICH COMPRISES THE STEPS OF PROVIDING AT EXPOSED SURFACES OF A BERYLLIUM CRUCIBLE AN ISOLATING LAYER AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF BERYLLIUM OXIDE AND BERYLLIUM NITRIDE BY SUBJECTING SAID SURFACES TO AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AIR AND NITROGEN, PLACING IN SAID CRUCIBLE A QUANTITY OF PLUTONIUM, ENCLOSING SAID CRUCIBLE WITHIN A METAL CONTAINER AND AT LEAST PARTIALLY EVACUATING SAID CONTAINER, SEALING SAID CONTAINER, AND THEREAFTER HEATING SAID CONTAINER AND CONTENTS TO A TEMPERATURE SUCH AS TO REACT SAID BERYLLIUM AND PLUTONIUM AND FORM PUBE13.
Claim 2
Independent Claim
102 words
THE METHOD OF MAKING A NEUTRON SOURCE WHICH COMPRISES THE STEPS OF PROVIDING AT EXPOSED SURFACES OF A BERYLLIUM CRUCIBLE AN ISOLATING LAYER AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF BERYLLIUM OXIDE AND BERYLLIUM NITRIDE BY SUBJECTING SAID SURFACES TO AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF AIR AND NITROGEN, PLACING IN SAID CRUCIBLE A QUANTITY OF PLUTONIUM, ENCLOSING SAID CRUCIBLE WITHIN A METAL CONTAINER AND AT LEAST PARTIALLY EVACUATING SAID CONTAINER, SEALING SAID CONTAINER, AND THEREAFTER HEATING SAID CONTAINER AND CONTENTS TO A TEMPERATURE SUCH AS TO REACT SAID BERYLLIUM AND PLUTONIUM AND FORM PUBE13.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |