US2923601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of isotope concentration
Assignee: Individual
•
Filing: 1955-11-22
•
Granted: 1960-02-02
•
Expires: 1975-11-22
Abstract
No abstract record available.
Inventors
- 👤 Taylor Thomas Ivan
- 👤 Spindel William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:08
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/28; B01D59/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD OF CONCENTRATING NITROGEN-15 WHICH COMPRISES PASSING GASEOUS NITRIC OXIDE OF AT LEAST SOME INTROGEN-15 CONTENT THROUGH AN EXCHANGE ZONE IN INTIMATE CONTACT WITH A LIQUID CONTAINING AS ITS ACTIVE INGREDIENT AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXYACIDS AND XOIDES OF NITROGEN CONTAINING AT LEAST SOME NITROGEN-14 WHEREIN THE ATOMIC RATION OF OXYGEN TO NITROGEN IS GREATER THAN UNITY TO CAUSE SAID LIQUID TO BE ENRICHED IN ITS NITROGEN-15 CONTENT, REACTING THE ENRICHED LIQUID IN A SEPARATE REDUCING ZONE WITH A REDUCING AGENT TO PRODUCE NITRIC OXIDE ENRICHED IN NITROGEN-15, AND CYCLING AT LEAST A PORTION OF SAID ENRICHED NITRIC OXIDE TO SAID EXCHANGE ZONE TO WITHDRAW A PRODUCT ENRICHED IN ITS NITROGEN-15 CONTENT.
Claim 2
Independent Claim
120 words
A METHOD OF CONCENTRATING NITROGEN-15 WHICH COMPRISES PASSING GASEOUS NITRIC OXIDE OF AT LEAST SOME INTROGEN-15 CONTENT THROUGH AN EXCHANGE ZONE IN INTIMATE CONTACT WITH A LIQUID CONTAINING AS ITS ACTIVE INGREDIENT AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXYACIDS AND XOIDES OF NITROGEN CONTAINING AT LEAST SOME NITROGEN-14 WHEREIN THE ATOMIC RATION OF OXYGEN TO NITROGEN IS GREATER THAN UNITY TO CAUSE SAID LIQUID TO BE ENRICHED IN ITS NITROGEN-15 CONTENT, REACTING THE ENRICHED LIQUID IN A SEPARATE REDUCING ZONE WITH A REDUCING AGENT TO PRODUCE NITRIC OXIDE ENRICHED IN NITROGEN-15, AND CYCLING AT LEAST A PORTION OF SAID ENRICHED NITRIC OXIDE TO SAID EXCHANGE ZONE TO WITHDRAW A PRODUCT ENRICHED IN ITS NITROGEN-15 CONTENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |