US4958081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focusing collimator and method for making it
Assignee: Siemens Medical Solutions USA Inc
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Filing: 1985-08-14
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Granted: 1990-09-18
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Expires: 2005-08-14
Abstract
Abstract A focusing collimator has a plurality of corrugated strips which are built up in a stack. Within each stacking plane of interest, each strip is shaped in cross-section as a part of a different radial sector of a common predetermined annulus.
Inventors
- 👤 Ronald E. Malmin
- 👤 William R. Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:48
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/025; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/164; G01T1/1641; G01T1/1642
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
70 words
A method of manufacturing a focusing corrugated strip type collimator in which all focii lie in a single central stacking plane which is perpendicular to all of the strips, comprising procuring a plurality of corrugated strips which are shaped in cross-section within said central stacking plane as different parts of different radial sectors of a common predetermined annulus; stacking the strips on a flat surface; and bonding the strips together.
Claim 2
Independent Claim
70 words
A method of manufacturing a focusing corrugated strip type collimator in which all focii lie in a single central stacking plane which is perpendicular to all of the strips, comprising procuring a plurality of corrugated strips which are shaped in cross-section within said central stacking plane as different parts of different radial sectors of a common predetermined annulus; stacking the strips on a flat surface; and bonding the strips together.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein all the sectors subtend a like solid angle.
References Cited (Backward Citations)
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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) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |