PATENT CLAIM ANALYSIS

Application Number: 15761926
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["536", "066000"]

Abstract:
A process for preparing an esterified cellulose ether comprises the step of esterifying a cellulose ether with (i) an aliphatic monocarboxylic acid anhydride or (ii) a dicarboxylic acid anhydride or (iii) a combination of an aliphatic monocarboxylic acid anhydride and a dicarboxylic acid anhydride in the presence of acetic acid. The esterification reaction is conducted in the presence of an alkali metal diacetate as a reaction catalyst.

Claim (Index 7):
The process of  claim 1  wherein the cellulose ether has a viscosity of from 1.8 to 100 mPa\u00b7s, measured as a 2.0% by weight solution in water at 20\u00b0 C. according to Ubbelohde.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 90.0
- Lexical Diversity: 1.78571
- Patent Class: 536.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15521088', '14766786', '14766609', '14420985', '15308767']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6767473255947235
- 35 USC 102 Novelty (BERT): 0.5185486264698047
- Combined Prediction Score: 0.6609274556822317
- Mean Citation Score: 307.29692000000006
- Max Citation Score: 343.58658
- Similarity Product: 313.18892845876337

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

Dataset: test