Owner 3M Innovative Properties Company

Inventors Maki, Stephen P.; Lyons, Christopher S.; Rakow, Neal A.

Agent Davies Collison Cave

Pub. Number AU-B-2005242832

PCT Pub. Number WO2005/111588

Priority 10/807,655 24.03.04 US

Filing date 22 February 2005

Wipo publication date 24 November 2005

Acceptance publication date 1 July 2010

G01N 21/75 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated

G01N 21/25 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Colour

G01N 21/41 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Refractivity

G01N 21/45 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light

G01N 21/78 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light

G01N 21/77 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - by observing the effect on a chemical indicator