PATENT CLAIM ANALYSIS

Application Number: 16096080
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["549", "250000"]

Abstract:
A method for producing an aromatic dianhydride includes reacting an aromatic diimide with a substituted or unsubstituted phthalic anhydride in an aqueous medium in the presence of an amine exchange catalyst to provide an aqueous reaction mixture including an N-substituted phthalimide, an aromatic tetraacid salt, and at least one of an aromatic triacid salt and an aromatic imide diacid salt. The method further includes removing the phthalimide from the aqueous reaction mixture by extracting the aqueous reaction mixture with an organic solvent for a first time period, at a first extraction temperature and subsequent to the first time period, extracting the aqueous reaction mixture with an organic solvent for a second time period, at a second extraction temperature. The aromatic tetraacid salt is converted to the corresponding aromatic dianhydride. Aromatic dianhydrides prepared according to the method are also described.

Claim (Index 15):
The method of  claim 1 , wherein the method is a continuous method.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 97.0
- Lexical Diversity: 2.14493
- Patent Class: 549.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13649443', '10667820', '10454006', '15551644', '11603523']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7436598452186436
- 35 USC 102 Novelty (BERT): 0.5094682151741341
- Combined Prediction Score: 0.7202406822141926
- Mean Citation Score: 223.3783
- Max Citation Score: 241.15402000000003
- Similarity Product: 149.7151326428211

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