Extract from the Register of European Patents

EP About this file: EP4559893

EP4559893 - METHOD FOR PRODUCING LACTIDE COMPOSITE [Right-click to bookmark this link]
StatusGrant of patent is intended
Status updated on  19.03.2026
Database last updated on 24.03.2026
FormerRequest for examination was made
Status updated on  25.04.2025
FormerThe international publication has been made
Status updated on  05.04.2025
Formerunknown
Status updated on  18.02.2025
Most recent event   Tooltip20.03.2026Change: Validation statespublished on 22.04.2026 [2026/17]
20.03.2026Change - extension statespublished on 22.04.2026 [2026/17]
Applicant(s)For all designated states
Lamacics Co., Ltd.
289, Sakuramiya-cho
Omihachiman-shi, Shiga 5230893 / JP
[2025/22]
Inventor(s)01 / SONE Hisao
Omihachiman-shi, Shiga 523-0893 / JP
02 / YOSHIZAWA Noriko
Omihachiman-shi, Shiga 523-0893 / JP
03 / BAMBA Norio
Omihachiman-shi, Shiga 523-0893 / JP
 [2025/22]
Representative(s)Müller-Boré & Partner Patentanwälte PartG mbB
Friedenheimer Brücke 21
80639 München / DE
[2025/22]
Application number, filing date24852928.127.05.2024
[2025/22]
WO2024JP19345
Priority number, dateJP2023016774128.09.2023         Original published format: JP 2023167741
[2025/22]
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2025069561
Date:03.04.2025
Language:JA
[2025/14]
Type: A1 Application with search report 
No.:EP4559893
Date:28.05.2025
Language:EN
[2025/22]
Search report(s)International search report - published on:JP03.04.2025
(Supplementary) European search report - dispatched on:EP16.12.2025
ClassificationIPC:C07C59/245, C07D275/00
[2026/03]
CPC:
C07C59/245 (EP); C07D319/12 (EP,US); C07C403/16 (EP);
C07C65/10 (EP); C07D213/63 (EP); C07D319/10 (EP);
C08G63/08 (EP) (-)
Former IPC [2025/22]C07C59/245
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,   ME,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2025/22]
TitleGerman:VERFAHREN ZUR HERSTELLUNG EINES LACTIDVERBUNDSTOFFS[2025/22]
English:METHOD FOR PRODUCING LACTIDE COMPOSITE[2025/22]
French:PROCÉDÉ DE PRODUCTION D'UN COMPOSITE DE LACTIDE[2025/22]
Entry into regional phase17.02.2025Translation filed 
20.02.2025National basic fee paid 
20.02.2025Search fee paid 
20.02.2025Designation fee(s) paid 
20.02.2025Examination fee paid 
Examination procedure20.02.2025Examination requested  [2025/22]
30.01.2026Date on which the examining division has become responsible
19.03.2026Communication of intention to grant the patent
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Documents cited:Search[A] US2004014991  (VAN GANSBERGHE FREDERIC et al.) [A] 1-7 * claims 1,12 *
 [A]   NEDERBERG F ET AL: "New Paradigms for Organic Catalysts: The First Organocatalytic Living Polymerization", ANGEWANDTE CHEMIE, VERLAG CHEMIE, HOBOKEN, USA, vol. 40, no. 14, 10 July 2001 (2001-07-10), pages 2712 - 2715, XP002638879, ISSN: 1433-7851 [A] 1-7 * figure Scheme 1 *
International search[A] US2004014991  (VAN GANSBERGHE FREDERIC et al.)
 [A]   OTTOU, WINNIE NZAHOU ET AL.: "Update and challenges in organo-mediated polymerization reactions", PROGRESS IN POLYMER SCIENCE, vol. 56, 2016, pages 64 - 115, XP029520093, DOI: 10.1016/j.progpolymsci.2015.12.001

DOI:   http://dx.doi.org/10.1016/j.progpolymsci.2015.12.001
 [A]   SAITO, TATSUYA ET AL.: "Alkali Metal Carboxylate as an Efficient and Simple Catalyst for Ring- Opening Polymerization of Cyclic Esters", MACROMOLECULES, vol. 51, 2018, pages 689 - 696, XP055762835, DOI: 10.1021/acs.macromol.7b02566

DOI:   http://dx.doi.org/10.1021/acs.macromol.7b02566
by applicantJP2015030814
 JP2014047317
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