Global Patent Index - EP 1000340 A1

EP 1000340 A1 2000-05-17 - METHOD AND APPARATUS FOR INVESTIGATING SURFACES

Title (en)

METHOD AND APPARATUS FOR INVESTIGATING SURFACES

Title (de)

VERFAHREN UND VORRICHTUNG ZUR UNTERSUCHUNG VON OBERFLÄCHEN

Title (fr)

PROCEDE ET APPAREIL PERMETTANT D'ETUDIER LES SURFACES

Publication

EP 1000340 A1 (EN)

Application

EP 98938452 A

Priority

  • GB 9716781 A
  • US 9816482 W

Abstract (en)

[origin: WO9908093A1] A process for comparing the dust retention properties of various treated and untreated hard surfaces, within a dust retaining enclosure, that includes subjecting the surfaces to be compared, previously coated with a standardized layer of dust, to a standardized dust dislodging force sufficient to dislodge dust from at least one of the surfaces, determining any increase in the quantity of dust particles in the atmosphere within the enclosure as a result of the dust dislodging force, and comparing the relative amounts of dust particles found in within the enclosure for the surfaces.

IPC 1-7 (main, further and additional classification)

G01N 19/04; G01N 15/06

IPC 8 full level (invention and additional information)

G01N 15/06 (2006.01); G01N 19/04 (2006.01); G01N 1/02 (2006.01)

CPC (invention and additional information)

G01N 19/04 (2013.01); G01N 15/0618 (2013.01); G01N 2001/028 (2013.01)

Citation (search report)

See references of WO 9908093A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

WO 9908093 A1 19990218; EP 1000340 A1 20000517; GB 9716781 D0 19971015

INPADOC legal status


2002-10-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020301

2000-05-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000126

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE