Patent US5920510A successfully refreshed from Google Patents.
US3407296A
Expired / Lapsed
US
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X-ray holographic microscope having three diffracting crystals disposed in parallel along the x-ray beam path
Assignee: International Business Machines Corp
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Filing: 1966-05-16
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Granted: 1968-10-22
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Expires: 1986-05-16
Abstract
No abstract record available.
Inventors
- 👤 John A Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:26
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/20075; B; B22; B22D; B22D11/00; B22D11/04; B22D11/041; G03; G03H; G03H5/00; G21; G21K; G21K7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN X-RAY MICROSCOPE COMPRISING A SOURCE OF X-RAYS, FIRST MEANS FOR CONVERTING SAID SOURCE INTO A PAIR OF DIVERGING MONOCHROMATIC X-RAY BEAMS, SECOND MEANS FOR CONVERTING SAID DIVERGING X-RAY BEAMS INTO A PAIR OF CONVERGING X-RAY BEAMS THAT MERGE TO FORM A STANDING WAVE INTERFERENCE PATTERN OF A GIVEN SPATIAL FREQUENCY, AN OBJECT TO BE MAGNIFIED PLACED IN THE PATH OF ONE OF SAID CONVERGING BEAMS SO AS TO PRODUCE A DIFFRACTION PATTERN OF SAID OBJECT, SAID DIFFRACTION PATTERN MODULATING SAID INTERFERENCE PATTERN, AND MEANS FOR SHIFTING SAID INTERFERENCE PATTERN TO LOW SPATIAL FREQUENCIES WHILE STILL RETAINING THE INFORMATION ABOUT THE OBJECT PRESENT IN THE MODULATION OF THE INTERFERENCE PATTERN.
Claim 2
Dependent Claim
110 words
AN X-RAY MICROSCOPE COMPRISING A SOURCE OF X-RAYS, FIRST MEANS FOR CONVERTING SAID SOURCE INTO A PAIR OF DIVERGING MONOCHROMATIC X-RAY BEAMS, SECOND MEANS FOR CONVERTING SAID DIVERGING X-RAY BEAMS INTO A PAIR OF CONVERGING X-RAY BEAMS THAT MERGE TO FORM A STANDING WAVE INTERFERENCE PATTERN OF A GIVEN SPATIAL FREQUENCY, AN OBJECT TO BE MAGNIFIED PLACED IN THE PATH OF ONE OF SAID CONVERGING BEAMS SO AS TO PRODUCE A DIFFRACTION PATTERN OF SAID OBJECT, SAID DIFFRACTION PATTERN MODULATING SAID INTERFERENCE PATTERN, AND MEANS FOR SHIFTING SAID INTERFERENCE PATTERN TO LOW SPATIAL FREQUENCIES WHILE STILL RETAINING THE INFORMATION ABOUT THE OBJECT PRESENT IN THE MODULATION OF THE INTERFERENCE PATTERN.
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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |