Patent US2731875A successfully refreshed from Google Patents.
US2731875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
gould
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:17
CPC Classifications
G; G01; G01J; G01J4/00; G01J4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A POLARIMETER FOR MEASURING THE OPTICAL ROTATION AND ROTATORY DISPERSION CHARACTERISTICS OF A SPECIMEN, COMPRISING A SOURCE OF PARALLEL RAYS OF LIGHT, MEANS FOR PLANE-POLARIZING THE BEAM OF LIGHT, MEANS FOR PASSING A FIRST PORTION OF THE POLARIZED BEAM OF LIGHT THROUGH THE SPECIMEN, AND MEANS FOR DETERMINING THE PHASE ANGLE BETWEEN THE FIRST PORTION OF THE BEAM AND THE REMAINING PORTION OF THE BEAM, SAID LAST-NAMED MEANS INCLUDING CONTINUOUSLY ROTATING ANALYZER PRISM MEANS POSITIONED TO INTERCEPT BOTH PORTIONS OF THE BEAM.
Claim 2
Dependent Claim
82 words
A POLARIMETER FOR MEASURING THE OPTICAL ROTATION AND ROTATORY DISPERSION CHARACTERISTICS OF A SPECIMEN, COMPRISING A SOURCE OF PARALLEL RAYS OF LIGHT, MEANS FOR PLANE-POLARIZING THE BEAM OF LIGHT, MEANS FOR PASSING A FIRST PORTION OF THE POLARIZED BEAM OF LIGHT THROUGH THE SPECIMEN, AND MEANS FOR DETERMINING THE PHASE ANGLE BETWEEN THE FIRST PORTION OF THE BEAM AND THE REMAINING PORTION OF THE BEAM, SAID LAST-NAMED MEANS INCLUDING CONTINUOUSLY ROTATING ANALYZER PRISM MEANS POSITIONED TO INTERCEPT BOTH PORTIONS OF THE BEAM.
References Cited (Backward Citations)
US2032128A
Cited
US2503808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |