Compact sharpening filter for orthovoltage x-rays
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Jan 7, 2020
Grant Date -
Nov 22, 2018
app pub date -
May 18, 2017
filing date -
May 18, 2017
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A sharpening filter for orthovoltage x-ray beams employs a substantially planar filter disk supporting a set of radial symmetric features controlling attenuation of x-ray transmission in concentric circular regions providing increased sharpness of the pencil beams in a compact filter structure that may be tailored to different beam sizes and focus depths.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
WISCONSIN ALUMNI RESEARCH FOUNDATION | 614 WALNUT STREET 13TH FLOOR MADISON WI 53726 |
International Classification(s)

- 2017 Application Filing Year
- G21K Class
- 261 Applications Filed
- 176 Patents Issued To-Date
- 67.44 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bender, Edward | Madison, US | 2 | 3 |
# of filed Patents : 2 Total Citations : 3 | |||
Culberson, Wesley | Madison, US | 2 | 1 |
# of filed Patents : 2 Total Citations : 1 | |||
DeWerd, Larry | Madison, US | 1 | 1 |
# of filed Patents : 1 Total Citations : 1 | |||
Fagerstrom, Jessica | Edmonds, US | 1 | 1 |
# of filed Patents : 1 Total Citations : 1 | |||
Lawless, Michael | Madison, US | 14 | 594 |
# of filed Patents : 14 Total Citations : 594 | |||
Palmer, Benjamin R M | Madison, US | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- G21K Class
- 0 % this patent is cited more than
- 5 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 7, 2027 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 7, 2031 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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Nov 02, 2023 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNORS:STONERIDGE, INC.;STONERIDGE ELECTRONICS, INC.;STONERIDGE CONTROL DEVICES, INC.;AND OTHERS;REEL/FRAME:065447/0664 Owner name: PNC BANK, NATIONAL ASSOCIATION, AS AGENT, OHIO Effective Date: Nov 02, 2023 |
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