Patent US4039954A successfully refreshed from Google Patents.
Patent US3123066A successfully refreshed from Google Patents.
US3123066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
brumley
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00165; A61B5/00; A61B5/0059; A61B5/0082; A61B5/0084; A61B5/145; A61B5/1455; A61B5/1459; A61B2562/00; A61B2562/02; A61B2562/0233; A61B2562/0238
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
AN OPTICAL CATHETER COMPRISING A PAIR OF ELONGATED FLEXIBLE LIGHT CONDUCTORS, A PROTECTIVE TUBE DISPOSED AROUND SAID CONDUCTORS, ADJACENT END PORTIONS OF SAID CONDUCTORS BEING CURVED SO THAT THEIR END FACES ARE DISPOSED IN RELATIVELY CLOSELY SPACED CONFRONTING RELATIONSHIP TO DEFINE A LIGHT GAP, SAID TUBE BEING SO ARRANGED AND CONSTRUCTED AS TO OPERABLY EXPOSE SAID GAP TO A FLUID IN WHICH SAID CONDUCTORS ARE INSERTED WHEREBY WHEN SAID CATHETER IS INSERTED INTO A BLOOD VESSEL AND LIGHT IS DIRECTED INTO ONE OF SAID CONDUCTORS IT IS CONDUCTED THERETHROUGH AND ACROSS SAID LIGHT GAP AND THE ATTENUATION OF THE LIGHT BY BLOOD DISPOSED IN SAID LIGHT GAP IS INDICATED BY THE RELATIVE INTENSITY OF LIGHT EMERGENT FROM THE OTHER ONE OF SAID CONDUCTORS.
References Cited (Backward Citations)
US1590283A
Cited
US1751584A
Cited
US2268321A
Cited
US2877368A
Cited
US2932294A
Cited
US2825260A
Cited
FR1123371A
Cited
US2790438A
Cited
US3068739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |