PATENT CLAIM ANALYSIS

Application Number: 15919909
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["536", "085000"]

Abstract:
A method for producing a cellulose ether having a high viscosity while keeping the same degree of polymerization as that in the production of a shaped pulp without changing a raw material or production facility. More specifically, provided is a method for producing a cellulose ether including steps of: cutting or pulverizing pulp to obtain sheet-like, chip-like, or powdery cellulose pulp, wherein the pulp is formed in a form of roll whose surface layer on at least one of the circumferential side and the ends is removed, or in a form of bale whose surface layer on at least one side is removed; bringing the obtained cellulose pulp into contact with an alkali metal hydroxide solution to obtain alkali cellulose; reacting the alkali cellulose with an alkylating agent to obtain a reaction product mixture; and subjecting the reaction product mixture to purification to obtain the cellulose ether.

Claim (Index 1):
A method for producing a cellulose ether, comprising steps of:\n cutting or pulverizing pulp to obtain sheet-like, chip-like, or powdery cellulose pulp, wherein the pulp is formed in a form of roll whose surface layer on at least one of the circumferential side and the ends is removed, or in a form of bale whose surface layer on at least one side is removed, bringing the obtained cellulose pulp into contact with an alkali metal hydroxide solution to obtain alkali cellulose, reacting the alkali cellulose with an alkylating agent to obtain a reaction product mixture, and subjecting the reaction product mixture to purification to obtain the cellulose ether.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 90.0
- Lexical Diversity: 1.95062
- Patent Class: 536.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12330611', '14447846', '13398393', '13596398', '14150793']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6069954637950463
- 35 USC 102 Novelty (BERT): 0.4612245095833845
- Combined Prediction Score: 0.5924183683738802
- Mean Citation Score: 182.799064
- Max Citation Score: 192.02327
- Similarity Product: 162.3016048781419

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

Dataset: test