【発明の名称】コバートマークの検出

Title:

【発明の名称】コバートマークの検出

Document Type and Number:

Japanese Patent JPH11510259

Kind Code:

A

Abstract:

PCT No. PCT/GB96/01898 Sec. 371 Date Jul. 2, 1997 Sec. 102(e) Date Jul. 2, 1997 PCT Filed Aug. 5, 1996 PCT Pub. No. WO97/06016 PCT Pub. Date Feb. 20, 1997A method and apparatus for monitoring a body having a reflective surface (1), a coating layer (2) of material transparent to visible light present on the surface (1) and producing a covert optical discontinuity in an imagewise distribution on the layer (2); the imagewise distribution is such that it is visible via polarized light (7) and viewing through a polarized filter (8).

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Inventors:

Fara Richard Mark
Hood Barry Allen

Application Number:

JP50823297A

Publication Date:

September 07, 1999

Filing Date:

August 05, 1996

Export Citation:

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Assignee:

SLS Bio File Limited

International Classes:

B44B7/00; B44C1/02; G01V8/10; (IPC1-7): G01V8/10

Domestic Patent References:

JPH06231466A	1994-08-19
JPH058534A	1993-01-19

Attorney, Agent or Firm:

Yoshio Saito

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