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 9):
The process of  claim 1  wherein the aliphatic monocarboxylic acid anhydride is selected from the group consisting of acetic anhydride, butyric anhydride and propionic anhydride and the dicarboxylic acid anhydride is selected from the group consisting of succinic anhydride, maleic anhydride and phthalic anhydride.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 90.0
- Lexical Diversity: 1.78571
- Patent Class: 536.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15521088', '14766786', '14766609', '14420985', '15308767']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7073840557582332
- 35 USC 102 Novelty (BERT): 0.5138176315237276
- Combined Prediction Score: 0.6880274133347826
- Mean Citation Score: 307.29692000000006
- Max Citation Score: 343.58658
- Similarity Product: 342.62988688210135

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