Penetrameter and method of use
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 11, 1993
Grant Date -
N/A
app pub date -
Jun 3, 1992
filing date -
Jun 3, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A penetrameter is provided for use in evaluating the resolution of an x-ray inspection system as well a method for calibrating the resolution of the x-ray inspection system. The penetrameter comprises a radiolucent substrate, and at least one filament at the radiolucent substrate, the at least one filament being broken by a gap having a predetermined size. The method of determining the resolution of an x-ray inspection system comprises steps of: generating a radiographic image of the penetrameter, determining if the broken filament is visible, and if the broken filament is visible, determining if the gap is visible.
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 | |
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LOCKHEED CORPORATION | 6801 ROCKLEDGE DRIVE BETHESDA MD 20817 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Wallace, Harry L | Kennesaw, GA | 8 | 112 |
# of filed Patents : 8 Total Citations : 112 |
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Patent Citation Ranking
- 9 Citation Count
- G01D Class
- 3.50 % this patent is cited more than
- 32 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
Full Text

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May 12, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
Jan 31, 2019 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:KANDOU LABS S.A.;REEL/FRAME:048302/0125 Owner name: COLUMBIA LAKE PARTNERS GROWTH LENDING I (LUXCO) S. Effective Date: Jan 31, 2019 free format text: SECURITY INTEREST;ASSIGNOR:KANDOU LABS S.A.;REEL/FRAME:048302/0125 Owner name: KREOS CAPITAL VI (UK) LIMITED, UNITED KINGDOM Effective Date: Jan 31, 2019 |
Nov 21, 2017 | I | Issuance | |
Nov 01, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jul 21, 2016 | P | Published | |
Apr 21, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHOKROLLAHI, AMIN;SINGH, ANANT;HOLDEN, BRIAN;SIGNING DATES FROM 20160407 TO 20160413;REEL/FRAME:038342/0212 Owner name: KANDOU LABS, S.A., SWITZERLAND |
Mar 29, 2016 | F | Filing |

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