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Prior Art Search Report on US 2023/0378460 A1 — Cathode for Lithium Secondary Battery
US 2023/0378460 A1 (SK On) is a pending application claiming a lithium-secondary-battery cathode built on single-particle lithium metal oxide plus a two-step high-then-low calcination, with a novel FIB-based crystal-size parameter (S/N, 1-3 um) and an XRD peak-intensity ratio. This 21-page prior-art search report was prepared BEFORE registration to secure killer prior art in advance — so the buyer is ready the moment the patent grants. KEY FINDINGS: method claims 10-13 are anticipated (X) — a US university publication discloses the hydroxide-plus-lithium-source, 970C/4h-then-780C/10h process step for step, and a third-party Chinese patent published 12 days before the critical date independently anticipates claims 10-12. Product claims 1-9 fall as obvious (Y) over combinations covering the single-crystal/polycrystalline blend, the identical XRD I(110)/(003) ratio formula, and matching half-cell capacity data. The report is candid about its limits: no reference reports the FIB-based S/N metric; the applicant's own XRD-ratio patent sits inside the US grace period (fully citable in EP opposition); the repeated-calcination claims (14-15) rest on a motivation argument. INCLUDES: verified verbatim citations with exact paragraph locations, per-claim X/Y/A ratings, 12-formula WIPS Global search history (EN/KO/JA/CN), and a full additional-references set. BEST USE: file away now; deploy in EP opposition against EP 4280303 A1 or US post-grant review/IPR the moment the patent issues.
Prior Art Search on US 2023-0216047 A1
This report provides the results of a comprehensive worldwide prior art search relating to the U.S. patent application titled “LITHIUM-NICKEL-MANGANESE-BASED COMPOSITE OXIDE MATERIAL, SECONDARY BATTERY, AND ELECTRIC APPARATUS,” assigned to Contemporary Amperex Technology Co., Limited (CATL). The search was conducted to identify prior art references relevant to all claims of the subject patent application, including patent documents and publicly available technical disclosures worldwide. The purpose of this search is to locate potentially relevant prior art that may impact the novelty and/or inventive step of the claimed invention.
Prior Art Search on US 2024-0014386 A1
This report provides the results of a comprehensive worldwide prior art search relating to the U.S. patent application titled “POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREOF, AND SECONDARY BATTERY INCLUDING SAME,” assigned to Contemporary Amperex Technology Co., Limited (CATL). The search was conducted to identify prior art references relevant to all claims of the subject patent application, including patent documents and publicly available technical disclosures worldwide. The purpose of this search is to locate potentially relevant prior art that may impact the novelty and/or inventive step of the claimed invention.