24/06/2005 - Controller General of Patents, Designs, and Trade Marks

Publication After 18 month
The following Patent application have been published under Section 11A of the Patents
(Amendment) Act, 2005
21) Application No.:
(54) Title of the invention:
528/MUMNP/2004
PCT/US01/03885
Date: 07/02/2001
(51) International classification: G 01 N 27/49 (71)
(30) Priority Data :
(31) Document No.: 09/499,421
(32) Date : 07/02/2000
(33) Name of convention country : U.S.A.
(66) Filed U/s. 5(2) : NO
(61) Patent of addition to application No.: NIL
(62) Filed on : N.A.
(63) Divisional to Application No.: NIL
(64) Filed on : N.A.
(57) Abstract: An electrochemical sensor (A, A') is
specific for the detection of peracetic acid in a solution
which also contains hydrogen peroxide. A potential is
applied between a reference electrode (120, 120') and a
working electrode (118, 118'). A read voltage (fig. 7) is
selectively pulsed to the working electrode and then
through the solution to a counter electrode (122, 122'). The
current flowing between the working electrode and the
counter electrode is dependent on the peracetic acid
concentration in the solution (fig. 6). By careful selection
of the read voltage, the contribution of hydrogen peroxide
to the current flow is virtually negligible. The sensor
effectively measures peracetic acid concentrations in the
range generally employed in sterilization and disinfection
baths (100-3000 ppm.).
Figure: 02.
A (22) Date of filing of
Application:
23/09/2004
ELECTROCHEMICAL SENSOR FOR THE SPECIFIC
DETECTION OF PERACETIC ACID IN AQUEOUS
SOLUTIONS USING PULSE AMPEROMETRIC METHODS.
(72)
Name of the Applicant:
STERIS INC.
Address of the Applicant:
43425 BUSINESS PARK DRIVE
TEMECULA, CA 92590,
U.S.A.
Name of the Inventors
01. MCVEY IAIN F.
02. DESANTIS BRIAN J.
03. LEWANDOWSKI JAN J.
04. THOMAS KAREN L.
05. SCHINDLY BRIAN E.
The Patent Office Journal 24.06.2005 17960