US3591803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining x-ray interference patterns
Assignee: US Philips Corp
•
Filing: 1969-10-16
•
Granted: 1971-07-06
•
Expires: 1989-10-16
Abstract
Abstract A method of obtaining X-ray interference patterns in which a crystal exhibiting the Borrmann effect, i.e., anomalously high transmission of X-rays by means of diffraction yielding a forward diffracted and a reflected diffracted ray, is employed and subsequently one of these rays is Bragg reflected causing it to converge with and interfere with the other ray.
Inventors
- 👤 Nathan Spielberg
- 👤 Dominick J Debitetto
- 👤 Ralph S Levitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:15
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/20075; G03; G03H; G03H5/00; G21; G21K; G21K1/00; G21K1/06; G21K2201/00; G21K2201/06; G21K2201/062
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
A method of obtaining an X-ray interference pattern as claimed in claim 1 wherein the step of increasing the angle at which said other diffracted ray is intercepted and reflected by said second portion is performed by applying force to said second portion of the crystal to rotate the crystal lattice planes of said second portion a few seconds of arc relative to the crystal lattice planes of said first portion thereby changing the point of convergence of the one diffracted ray and the other diffracted ray reflected by said second portion.
Claim 2
Dependent Claim
82 words
A method of obtaining an X-ray interference pattern as claimed in claim 1 wherein the step of increasing the angle at which said other diffracted ray is intercepted and reflected by said second portion is performed by inserting a refracting wedge in the path of said other diffracted ray between said first and second portions of the crystal to bend the beam a few seconds of arc thereby moving the point of convergence of said one diffracted ray and said reflected ray.
Claim 3
Dependent Claim
48 words
A method of obtaining an X-ray hologram of an object comprising the step of inserting the object in the path of one of said diffracted rays obtained in the method as claimed in claim 1 and recording a hologram at the point of convergence of said diffracted rays.
References Cited (Backward Citations)
US2999931A
Cited
US3381127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |