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EP3697962
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EP About this file: EP3697962
| EP3697962 - A METHOD AND A SYSTEM FOR REMOVING HYDROGEN SULPHIDE IONS (HS-) FROM A LIQUOR OF A PULP MILL PROCESS [Right-click to bookmark this link] | Status | The patent has been granted Status updated on 31.10.2025 Database last updated on 28.03.2026 | |
| Former | Grant of patent is intended Status updated on 04.07.2025 | ||
| Former | Examination is in progress Status updated on 20.05.2022 | ||
| Former | Request for examination was made Status updated on 24.07.2020 | ||
| Former | The international publication has been made Status updated on 26.04.2019 | ||
| Former | unknown Status updated on 05.11.2018 | Most recent event Tooltip | 31.10.2025 | (Expected) grant | published on 03.12.2025 [2025/49] | Applicant(s) | For all designated states Valmet Technologies Oy Keilasatama 5 02150 Espoo / FI | [2020/35] | Inventor(s) | 01 /
LAMPINEN, Rami Koljontie 22 B 33500 Tampere / FI | 02 /
VÄLIMÄKI, Erkki Sarastuksentie 4 - 8 A 2 36110 Ruutana / FI | 03 /
HILLI, Tuomo Väinölänkatu 26 B 5 33500 Tampere / FI | [2020/35] | Representative(s) | Berggren Oy P.O. Box 16 Fabianinkatu 21 00101 Helsinki / FI | [2025/49] |
| Former [2020/35] | Berggren Oy, Tampere Visiokatu 1 33720 Tampere / FI | Application number, filing date | 18792417.0 | 15.10.2018 | [2020/35] | WO2018FI50739 | Priority number, date | FI20170005925 | 20.10.2017 Original published format: FI 20175925 | [2020/35] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | WO2019077202 | Date: | 25.04.2019 | Language: | EN | [2019/17] | Type: | A1 Application with search report | No.: | EP3697962 | Date: | 26.08.2020 | Language: | EN | The application published by WIPO in one of the EPO official languages on 25.04.2019 takes the place of the publication of the European patent application. | [2020/35] | Type: | B1 Patent specification | No.: | EP3697962 | Date: | 03.12.2025 | Language: | EN | [2025/49] | Search report(s) | International search report - published on: | EP | 25.04.2019 | Classification | IPC: | D21C11/00, D21C11/04 | [2020/35] | CPC: |
D21C11/0057 (EP,FI,US);
D21C11/04 (EP,FI,US);
B01J10/00 (FI);
D21C11/00 (FI);
F04F5/42 (FI,US)
| Designated contracting states | AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR [2020/35]
| Extension states | BA | Not yet paid | ME | Not yet paid | Validation states | KH | Not yet paid | MA | Not yet paid | MD | Not yet paid | TN | Not yet paid | Title | German: | VERFAHREN UND SYSTEM ZUR ENTFERNUNG VON WASSERSTOFFSULFIDIONEN (HS-) AUS DER SCHWARZLAUGE EINES ZELLSTOFFWERKS | [2020/35] | English: | A METHOD AND A SYSTEM FOR REMOVING HYDROGEN SULPHIDE IONS (HS-) FROM A LIQUOR OF A PULP MILL PROCESS | [2020/35] | French: | PROCÉDÉ ET SYSTÈME D'ÉLIMINATION D'IONS SULFURE D'HYDROGÈNE (HS-) D'UNE LIQUEUR D'UN PROCESSUS DE FABRICATION DE PÂTE À PAPIER | [2020/35] | Entry into regional phase | 26.03.2020 | National basic fee paid | 26.03.2020 | Designation fee(s) paid | 26.03.2020 | Examination fee paid | Examination procedure | 26.03.2020 | Examination requested [2020/35] | 26.03.2020 | Date on which the examining division has become responsible | 13.11.2020 | Amendment by applicant (claims and/or description) | 23.05.2022 | Despatch of a communication from the examining division (Time limit: M04) | 02.09.2022 | Reply to a communication from the examining division | 05.11.2024 | Despatch of a communication from the examining division (Time limit: M04) | 28.01.2025 | Reply to a communication from the examining division | 04.07.2025 | Communication of intention to grant the patent | 13.10.2025 | Fee for grant paid | 13.10.2025 | Fee for publishing/printing paid | 13.10.2025 | Receipt of the translation of the claim(s) | Fees paid | Renewal fee | 23.10.2020 | Renewal fee patent year 03 | 25.10.2021 | Renewal fee patent year 04 | 25.10.2022 | Renewal fee patent year 05 | 25.10.2023 | Renewal fee patent year 06 | 25.10.2024 | Renewal fee patent year 07 | 27.10.2025 | Renewal fee patent year 08 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Cited in | International search | [XYI] CA1043516 (MO OCH DOMSJOE AB et al.) | [Y] US4058433 (FULLER ROBERT R et al.) | [XYI] US6168685 (HO CHRIS KA KEE et al.) [X] 1,2,13 * figures 1-3; claims 1-19 *[Y] 1 [I] 10,11 | [Y] US4053352 (HULTMAN BENGT GORAN et al.) [Y] 1 * figures 1,2,10; claims 1-29 * | [Y] US2002021994 (BLUE JERRY D et al.) [Y] 1 * figure 1; claims 1-4 * | [A] GB2527096 (TRANSVAC SYSTEMS LTD et al.) [A] 1-15 * the whole document * | by applicant | EP0643163 | US2000762 |