Global Patent Index - EP 1002447 A1

EP 1002447 A1 2000-05-24 - SENSOR DEVICES AND ANALYTICAL METHODS USING THEM

Title (en)

SENSOR DEVICES AND ANALYTICAL METHODS USING THEM

Title (de)

ELEKTRISCHES FLUSSIGKEITERHITZUNGSGEFÄSS

Title (fr)

RECIPIENTS ELECTRIQUES DE CHAUFFAGE DE LIQUIDE

Publication

EP 1002447 A1 (EN)

Application

EP 98937666 A

Priority

  • GB 9802348 W
  • GB 9716560 A
  • GB 9716561 A

Abstract (en)

[origin: WO9908485A1] An electric liquid heating vessel (2) has a heated wall part (6) which is of a 300 series stainless steel, with a thick film heater (4) laminated to its dry side.

[origin: WO9908485A1] Improved sensor devices responsive to ionic changes, and especially pH changes, of media in contact with them, wherein the sensor element is coated with diamond-like carbon, and analytical methods for their use. The device is especially applicable to systems in which the pH change measured is the result by enzyme action, particularly by formation of a basic product, for example using urease as the enzyme to form ammonia from urea. The preferred sensor element is a solid-state device, notably an enzyme field effect transistor in which the enzyme is bound on the surface of a semiconductor in conjunction with a conducting polymer, preferably poly-pyrrole. Determinations are usually made by measurement of the impedance of the sensor when in contact with a buffered solution of the sample to be examined, and can be used for determining urea levels in blood.

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

H05B 3/82; H05B 3/26; H05B 3/30

IPC 8 full level (invention and additional information)

C12Q 1/00 (2006.01); G01N 27/30 (2006.01); G01N 27/414 (2006.01); H05B 3/26 (2006.01); H05B 3/30 (2006.01); H05B 3/82 (2006.01)

CPC (invention and additional information)

H05B 3/265 (2013.01); C12Q 1/001 (2013.01); C12Q 1/004 (2013.01); C12Q 1/005 (2013.01); C12Q 1/006 (2013.01); G01N 27/4145 (2013.01); H05B 3/262 (2013.01); H05B 3/30 (2013.01); H05B 3/82 (2013.01); G01N 27/308 (2013.01); H05B 2203/013 (2013.01); H05B 2203/017 (2013.01)

Citation (search report)

See references of WO 9908485A1

Designated contracting state (EPC)

DE ES FR GB IT NL

EPO simple patent family

WO 9908485 A1 19990218; WO 9908485 A9 20000602; AU 8638898 A 19990301; CN 1124773 C 20031015; CN 1270753 A 20001018; EP 1002447 A1 20000524; GB 0002566 D0 20000329; GB 2346529 A 20000809

INPADOC legal status


2001-12-19 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010606

2001-01-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20001124

2000-05-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000207

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT NL