Extract from the Register of European Patents

EP About this file: EP4274963

EP4274963 - PISTON COUPLER FOR A RECIPROCATING PUMP [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  19.09.2025
Database last updated on 08.04.2026
FormerGrant of patent is intended
Status updated on  03.06.2025
FormerRequest for examination was made
Status updated on  13.10.2023
FormerThe international publication has been made
Status updated on  12.08.2022
Most recent event   Tooltip20.03.2026Lapse of the patent in a contracting statepublished on 22.04.2026 [2026/17]
Applicant(s)For all designated states
Wagner Spray Tech Corporation
1770 Fernbrook Lane North
Plymouth, MN 55447 / US
[2023/46]
Inventor(s)01 / ZIENTARA, Daniel R.
Lakeville, Minnesota 55044 / US
02 / KIEFFER, Joseph W.
Chanhassen, Minnesota 55317 / US
 [2023/46]
Representative(s)RavensPAT Patentanwälte Partnerschaft mbB
Großtobeler Straße 39
88276 Berg / Ravensburg / DE
[2025/43]
Former [2023/46]Otten, Roth, Dobler & Partner mbB Patentanwälte
Großtobeler Straße 39
88276 Berg / Ravensburg / DE
Application number, filing date22750168.120.01.2022
[2023/46]
WO2022US13118
Priority number, dateUS202163146073P05.02.2021         Original published format: US 202163146073 P
US20221757868419.01.2022         Original published format: US202217578684
[2023/46]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022169608
Date:11.08.2022
Language:EN
[2022/32]
Type: A1 Application with search report 
No.:EP4274963
Date:15.11.2023
Language:EN
The application published by WIPO in one of the EPO official languages on 11.08.2022 takes the place of the publication of the European patent application.
[2023/46]
Type: B1 Patent specification 
No.:EP4274963
Date:22.10.2025
Language:EN
[2025/43]
Search report(s)International search report - published on:KR11.08.2022
(Supplementary) European search report - dispatched on:EP15.10.2024
ClassificationIPC:F04B15/02, F04B9/105, F04B17/06, F04B53/14, F04B53/16, F16L21/06, B05B9/00, B05B9/04, B05C17/03, F04B53/22
[2025/24]
CPC:
F04B15/02 (EP,US); B05C11/1031 (US); B05C5/0237 (US);
B05D1/26 (US); F04B53/14 (EP); F04B53/144 (EP);
F04B53/16 (US); F04B53/22 (EP); F04B9/105 (EP);
B05B9/007 (EP); B05B9/0409 (EP); B05B9/0413 (EP);
B05C17/0333 (EP); F04B9/10 (US); F16L21/06 (EP) (-)
Former IPC [2024/46]F04B15/02, F04B9/103, F04B17/06, F04B53/14, F04B53/16, F04B53/22, F16L21/06
Former IPC [2023/46]F04B15/02, F04B9/103, F04B17/06, F04B53/14, F04B53/16, F04B53/22
Designated contracting statesAL,   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 [2023/46]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:KOLBENKUPPLUNG FÜR EINE KOLBENPUMPE[2023/46]
English:PISTON COUPLER FOR A RECIPROCATING PUMP[2023/46]
French:COUPLEUR DE PISTON POUR POMPE ALTERNATIVE[2023/46]
Entry into regional phase11.08.2023National basic fee paid 
11.08.2023Search fee paid 
11.08.2023Designation fee(s) paid 
11.08.2023Examination fee paid 
Examination procedure11.08.2023Examination requested  [2023/46]
11.03.2025Amendment by applicant (claims and/or description)
11.03.2025Date on which the examining division has become responsible
04.06.2025Communication of intention to grant the patent
16.09.2025Fee for grant paid
16.09.2025Fee for publishing/printing paid
16.09.2025Receipt of the translation of the claim(s)
Fees paidRenewal fee
29.01.2024Renewal fee patent year 03
27.01.2025Renewal fee patent year 04
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Lapses during opposition  TooltipNL22.10.2025
[2026/17]
Documents cited:Search[XY] WO2019051172  (WAGNER SPRAY TECH CORP et al.) [X] 8 * figures 1,2A,2B,2C * * paragraph [0026] - paragraph [0033] *[Y] 1-7,9-15
 [Y] KR20190105345  (BC TAECHAN IND CORP et al.) [Y] 1-7,9-15 * figures 1, 2 * * paragraph [0061] - paragraph [0069] *
 [A] US2005199119  (MCCOLLOUGH MARK W et al.) [A] 1-15 * figures 2-5 * * paragraph [0022] - paragraph [0035] *
 [A] JPH10306889  (NOK CORP et al.) [A] 1-15 * figure 2 * * paragraph [0010] - paragraph [0019] *
International search[XY] US2005199119  (MCCOLLOUGH MARK W et al.) [X] 1,7-10 * paragraphs [0002]-[0052] and figures 2-5 *[Y] 2-6,11-20
 [Y] JPH10306889  (NOK CORP et al.) [Y] 2-6,11-20 * abstract, paragraphs [0015], [0016], and figures 1-3 *
 [A] US6164188  (MISER H T et al.) [A] 1-20 * column 3, line 39 - column 9, line 4, claims 1-12, and figures 1-12 *
 [A] US2004177752  (BUCHHAUSER WOLFGANG et al.) [A] 1-20 * paragraphs [0024]-[0036] and figures 1-3 *
 [A] US2002159823  (ADAY JAMES C et al.) [A] 1-20 * abstract and claims 1-10 *
by applicantWO2019051172
 KR20190105345
 US2005199119
 JPH10306889
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