US2835699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive tracers for pipe lines
Assignee: —
•
Filing: —
•
Granted: 1958-05-20
•
Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:45
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/62; A; A61; A61K; A61K51/00; A61K51/02; A61K51/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A RADIOACTIVE TRACER CONSISTING ESSENTIALLY OF AN OIL SOLUBLE SULFONATE OF AN ISOTOPE OF CESIUM SELECTED FROM THE GROUP CONSISTING OF CS134N AND CS137.
Claim 2
Dependent Claim
24 words
A RADIOACTIVE TRACER CONSISTING ESSENTIALLY OF AN OIL SOLUBLE SULFONATE OF AN ISOTOPE OF CESIUM SELECTED FROM THE GROUP CONSISTING OF CS134N AND CS137.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |