PATENT CLAIM ANALYSIS

Application Number: 15762652
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["428", "480000"]

Abstract:
The present invention provides a polyester film, wherein an arbitrary direction on the film surface is defined to have an angle of 0°, and three directions are defined to have angles of 45°, 90°, and 135°, respectively, clockwise from the 0° direction, and the difference between the maximum value and the minimum value of the stresses at 5% elongation in the four directions is 50 MPa or less, the difference between the maximum value and the minimum value of the stresses at 15% elongation i,n the four directions is 70 MPa or less, and the modulus of elasticity in any one of the four directions falls within a range from 2.0 to 3.5 GPa.

Claim (Index 16):
A method for producing the polyester film according to  claim 10 , wherein an undrawn sheet is successively biaxially drawn in such a way that\n a first drawing for obtaining a first drawn film by drawing the undrawn sheet in a longitudinal direction (MD) is performed in a temperature range from 65 to 105\u00b0 C., a second drawing for obtaining a second drawn film by drawing the first drawn film in a transverse direction (TD) is performed in a temperature range from 100 to 150\u00b0 C., the temperature is increased sequentially along a film taking-up direction throughout the drawing process, and a drawing magnification (DR MD ) in the longitudinal direction (MD) and a drawing magnification (DR TD ) in the transverse direction (TD) satisfy the following (a) and (b):\n 0.70\u2264 DR MD /DR TD \u22640.90 \u2003\u2003(a) \n 12.5\u2264 DR MD \u00d7DR TD \u226415.5 \u2003\u2003(b).

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 2.0
- Patent Class: 428.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10505048', '15100888', '14259544', '13997460', '15922417']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.883725139668533
- 35 USC 102 Novelty (BERT): 0.5038361323148375
- Combined Prediction Score: 0.8457362389331635
- Mean Citation Score: 197.77979
- Max Citation Score: 202.30084
- Similarity Product: 128.747880890944

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