PATENT CLAIM ANALYSIS

Application Number: 15872277
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["429", "144000"]

Abstract:
A microporous battery separator is provided having a first co-extruded multilayered portion and a second co-extruded multilayered portion. The two portions are bonded together. In a preferred embodiment, the battery separator has two substantially identical multilayered portions bonded together face-to-face. Each of the two multilayered portions has at least one strength layer and at least one shutdown layer. Methods for making the battery separators are also provided. Preferably, a tubular multilayered film is extruded, and collapsed onto itself to form a multilayered battery separator precursor. The precursor is then bonded and annealed before it is stretched to form a microporous multilayer battery separator.

Claim (Index 1):
A method for making a multilayer battery separator comprising the steps of:\n co-extruding a tubular film with multiple layers; collapsing and face-to-face bonding the tubular film onto itself to form a battery separator precursor with two plies of the tubular film bonded face-to-face; annealing the precursor; and stretching the bonded and annealed precursor to form a microporous multilayer battery separator.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 86.0
- Lexical Diversity: 1.91525
- Patent Class: 429.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11744930', '14950625', '15223032', '15172215', '10041348']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8704359480248978
- 35 USC 102 Novelty (BERT): 0.5411138656163537
- Combined Prediction Score: 0.8375037397840434
- Mean Citation Score: 259.901524
- Max Citation Score: 402.8611
- Similarity Product: 358.333143189323

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test