US3186296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for microscopic inspection using colored illumination
Assignee: Individual
•
Filing: 1960-12-09
•
Granted: 1965-06-01
•
Expires: 1980-12-09
Abstract
No abstract record available.
Inventors
- 👤 Richard T Erban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF INCREASING THE ACUITY OF VISUAL PERCEPTION OF MINUTE IRREGULARITIES IN THE SURFACE OF AN OBJECT UNDER MICROSCOPIC ABSERVATION WHICH COMPRISES THE STEPS OF HOLDING THE OBJECT SUITABLY POSITIONED WITH RESPECT TO THE OBJECTIVE LENS OF A MICROSCOPE, ILLUMINATING SAID OBJECT SIMULTANEOUSLY BY A PLURALITY OF LIGHT BEAMS OF DIFFERING COLORS AND INTENSITIES, AND ADJUSTING THE ANGLE OF INCIDENCE OF EACH INDIVIDUAL LIGHT BEAM UPON THE OBJECT TO ACHIEVE A DIFFERENTIAL ILLUMINATION OF THE PORTIONS OF THE SURFACE OF SAID OBJECT WHICH ARE UNDER OBSERVATION.
Claim 2
Independent Claim
87 words
THE METHOD OF INCREASING THE ACUITY OF VISUAL PERCEPTION OF MINUTE IRREGULARITIES IN THE SURFACE OF AN OBJECT UNDER MICROSCOPIC ABSERVATION WHICH COMPRISES THE STEPS OF HOLDING THE OBJECT SUITABLY POSITIONED WITH RESPECT TO THE OBJECTIVE LENS OF A MICROSCOPE, ILLUMINATING SAID OBJECT SIMULTANEOUSLY BY A PLURALITY OF LIGHT BEAMS OF DIFFERING COLORS AND INTENSITIES, AND ADJUSTING THE ANGLE OF INCIDENCE OF EACH INDIVIDUAL LIGHT BEAM UPON THE OBJECT TO ACHIEVE A DIFFERENTIAL ILLUMINATION OF THE PORTIONS OF THE SURFACE OF SAID OBJECT WHICH ARE UNDER OBSERVATION.
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |