Patent No. EP2729305 (titled "Process For The Manufacture Of Multilayer Articles") was filed by Xtek on Jul 6, 2012. The application was issued on Aug 22, 2018.
A composite article consolidation apparatus (100) applies concurrent pressure and thermal cycling to consolidate multilayer stacks, such as ballistic armor. The apparatus comprises a processing liquid (108), a processing volume (101) with a loading opening (401) and circulation ports, and systems for liquid pressurization (104), circulation (105), heating (106), and cooling (107). A process control system manages the thermal and pressurization systems. A composite article preparation system includes a sealable membrane (207) for liquid separation, a sealable membrane (302) to maintain sub-atmospheric pressure prior to external pressurization, a cushioning membrane (301), and an anti-adhesion membrane (206). The system enables high-pressure consolidation of complex geometries, reducing air entrapment and tooling costs compared to axial pressing or autoclaves.

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| Company | Opposition Date | Representative |
|---|---|---|
| NFM HOLDING AS | May 20, 2019 | PROTECTOR |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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