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Extract from the Register of European Patents

EP About this file: EP0147660

EP0147660 - Colorimetric measuring method for zinc [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  30.08.1990
Database last updated on 08.01.2025
Most recent event   Tooltip12.11.1999Lapse of the patent in a contracting state
New state(s): LU
published on 29.12.1999 [1999/52]
Applicant(s)For all designated states
WAKO PURE CHEMICAL INDUSTRIES, LTD.
10, Doshomachi-3-chome Higashi-ku
Osaka / JP
[N/P]
Former [1985/28]For all designated states
WAKO PURE CHEMICAL INDUSTRIES, LTD.
10, Doshomachi-3-chome
Higashi-ku Osaka / JP
Inventor(s)01 / Yamazato, Fujio
3-8-540, Minamisuna 2-chome
Koto-ku Tokyo / JP
02 / Tokuda, Kuniaki
515-13, Oaza Matoba
Kawagoe-shi Saitama / JP
[1985/28]
Representative(s)advotec.
Patent- und Rechtsanwaltspartnerschaft
Tappe mbB
Widenmayerstraße 4
80538 München / DE
[N/P]
Former [1986/14]Dr. Elisabeth Jung Dr. Jürgen Schirdewahn Dipl.-Ing. Claus Gernhardt
Postfach 40 14 68
D-80714 München / DE
Former [1985/28]Dr. Elisabeth Jung Dr. Jürgen Schirdewahn Dipl.-Ing. Claus Gernhardt
Postfach 40 14 68
D-80714 München / DE
Application number, filing date84114486.829.11.1984
[1985/28]
Priority number, dateJP1983022822102.12.1983         Original published format: JP 22822183
[1985/28]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0147660
Date:10.07.1985
Language:EN
[1985/28]
Type: A3 Search report 
No.:EP0147660
Date:09.04.1986
Language:EN
[1986/15]
Type: B1 Patent specification 
No.:EP0147660
Date:08.11.1989
Language:EN
[1989/45]
Search report(s)(Supplementary) European search report - dispatched on:EP17.02.1986
ClassificationIPC:G01N33/84, G01N31/22
[1985/28]
CPC:
G01N33/84 (EP); G01N31/22 (EP)
Designated contracting statesAT,   BE,   CH,   DE,   FR,   GB,   IT,   LI,   LU,   NL,   SE [1985/28]
TitleGerman:Verfahren zur kolorimetrischen Messung von Zink[1985/28]
English:Colorimetric measuring method for zinc[1985/28]
French:Méthode de mesure colorimétrique du zinc[1985/28]
Examination procedure24.04.1986Examination requested  [1986/27]
18.07.1988Despatch of a communication from the examining division (Time limit: M04)
15.11.1988Reply to a communication from the examining division
09.02.1989Despatch of communication of intention to grant (Approval: Yes)
09.05.1989Communication of intention to grant the patent
21.07.1989Fee for grant paid
21.07.1989Fee for publishing/printing paid
Opposition(s)09.08.1990No opposition filed within time limit [1990/42]
Fees paidRenewal fee
27.11.1986Renewal fee patent year 03
26.11.1987Renewal fee patent year 04
28.11.1988Renewal fee patent year 05
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See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipAT08.11.1989
SE08.11.1989
LU30.11.1989
[1999/52]
Former [1990/42]AT08.11.1989
SE08.11.1989
Former [1990/29]SE08.11.1989
Documents cited:Search[XP]JP8430061  ;
 [Y]JP8430061
 [XP]  - CHEMICAL ABSTRACTS, vol. 101, no. 17, 22th October 1984, page 353, no. 147313s, Columbus, Ohio, US; & JP - A - 84 30061 (WAKO PURE CHEMICAL INDUSTRIES, LTD.) 17-02-1984, & JP8430061 A 00000000
 [Y]  - CHEMICAL ABSTRACTS, vol. 101, no. 17, 22th October 1984, page 353, no. 147313s, Columbus, Ohio, US; & JP - A - 84 30061 (WAKO PURE CHEMICAL INDUSTRIES, LTD.) 17-02-1984, & JP8430061 A 00000000
 [Y]  - CHEMICAL ABSTRACTS, vol. 90, no. 6, 5th February 1979, page 601, no. 47864h, Columbus, Ohio, US; M. FURUKAWA: "2-[2-(5-chloropyridyl)azo]-5-dimethylaminophenol as a new sensitive reagent for zinc ", & NAGOYA KOGYO GIJTSU SHIKENSHO HOKOKU 1978, 27(7), 223-9
 [A]  - CHEMICAL ABSTRACTS, vol. 99, no. 2, 11th July 1983, page 634, no. 15732h, Columbus, Ohio, US; K. OHSHITA et al.: "Synthesis of N-sulfoalkyl derivatives of 2-(2-pyridylazo)-5-aminophenol and the spectrophotometric determination of uranium(VI)", & ANAL. CHIM. ACTA 1983, 149, 269-79
 [A]  - CHEMICAL ABSTRACTS, vol. 97, no. 6, 9th August 1982, page 650, no. 48790n, Columbus, Ohio, US; S-H HUNG et al.: "Spectrophotometric determination of silver with 2-(3,5-dibromo-2-pyridylazo)-5-diethylaminophnenol in the presence of anionic surfactant", & TALANTA 1982, 29(2), 85-8
    [ ] - CHEMICAL ABSTRACTS, vol. 87, no. 26, December 1977, page 181, no. 204734y, Columbus, Ohio, US; R.V. PAMMENTER et al.: "The elimination of nickel from zinc plant solutions using dimethylglyoxime", & PAP. TASMANIA CONF. 1977, 291-8
Examination   - Anal Chim ACTA 1983,149,269-79
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.