PATENT CLAIM ANALYSIS

Application Number: 15866547
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["361", "679000"]

Abstract:
A film and a flexible metal-clad laminate obtained with the film. The laminate is improved in post-moisture absorption solderability. The film comprises a heat-resistant polyimide film and, disposed on at least one side thereof, an adhesive layer containing a thermoplastic polyimide. It is characterized in that the thermoplastic polyimide contained in the adhesive layer has crystallinity and that the film, when analyzed with a differential scanning calorimeter, has an endothermic peak attributable to the melting of the crystalline thermoplastic polyimide, the absolute value of the area of the peak being 4.0 mJ/mg or larger. The flexible metal-clad laminate is characterized by comprising the film and a metal layer disposed thereon.

Claim (Index 22):
A film, comprising:\n an adhesive layer on at least one surface of a heat-resistant polyimide film, wherein the adhesive layer comprises a crystalline thermoplastic polyimide produced by a process comprising the following (a) to (e): (a) reacting a first aromatic diamine with a first aromatic dianhydride in an organic polar solvent under a condition where the first aromatic diamine or the first aromatic dianhydride is contained in excess to obtain a prepolymer having an amino group or an acid anhydride group at both ends, (b) mixing the prepolymer with one of (i) a second aromatic diamine different from the first aromatic diamine and (ii) a second aromatic dianhydride different from the first aromatic dianhydride to obtain a reaction product, (c) mixing the reaction product of (b) with the other of (i) the second aromatic diamine and (ii) the second aromatic dianhydride such that the second aromatic diamine and the second aromatic dianhydride are present in substantially equimolar amounts, (d) performing polymerization to obtain a polyamic acid, and (e) imidizing the polyamic acid, wherein the polyamic acid is a block polymer including a block A and a block B where the block A is obtained from raw materials in (a) and the block B is obtained from raw materials in (b) and/or (c), and wherein the blocks A and B and their ratio in the polyamic acid are controlled such that the film has an endothermic peak area of 4.0 mJ/mg or higher in an absolute value attributed to melting of the crystalline thermoplastic polyimide as measured by a differential scanning calorimetry on the film.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 86.0
- Lexical Diversity: 1.875
- Patent Class: 361.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15057934', '11663622', '11918558', '14901089', '11918803']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8665647921283167
- 35 USC 102 Novelty (BERT): 0.6162272125898094
- Combined Prediction Score: 0.841531034174466
- Mean Citation Score: 412.228002
- Max Citation Score: 571.1097
- Similarity Product: 538.473193946439

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test