PATENT CLAIM ANALYSIS

Application Number: 16216826
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["508", "454000"]

Abstract:
Lubricant compositions including an additive composition and methods for its use in engines that produce soot. The lubricant composition contains a base oil and an additive composition having (a) at least 0.05 percent by weight of a first dispersant that is a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride, and B) at least one polyamine; and (b) at least 0.05 percent by weight, both based on a total weight of the lubricant composition, of a second dispersant that is a reaction product of A′) a hydrocarbyl-dicarboxylic acid or anhydride, and B′) at least one polyamine, wherein the reaction product is post-treated with C) an aromatic carboxylic acid, an aromatic polycarboxylic acid, or an aromatic anhydride wherein all carboxylic acid or anhydride groups are attached directly to an aromatic ring, and/or D) a non-aromatic dicarboxylic acid or anhydride having a number average molecular weight of less than about 500.

Claim (Index 16):
A method for maintaining the soot or sludge handling capability of an engine oil composition comprising the step of adding to the engine oil composition an additive composition comprising:\n (a) at least 0.05 percent by weight, based on a total weight of the engine oil composition, of a first dispersant that is a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride, and B) at least one polyamine; and (b) at least 0.05 percent by weight, based on a total weight of the engine oil composition, of a second dispersant that is a reaction product of A\u2032) a hydrocarbyl-dicarboxylic acid or anhydride, and B\u2032) at least one polyamine that is post-treated with C) an aromatic carboxylic acid, an aromatic polycarboxylic acid, or an aromatic anhydride wherein all carboxylic acid or anhydride groups are attached directly to an aromatic ring, wherein the reaction product of the second dispersant has a ratio of A\u2032 to B\u2032 in the range of 4:3 to 2:1.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 98.0
- Lexical Diversity: 2.08537
- Patent Class: 508.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15156372', '15837379', '13549697', '13202647', '14701899']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8482839574166156
- 35 USC 102 Novelty (BERT): 0.6438754836823206
- Combined Prediction Score: 0.827843110043186
- Mean Citation Score: 398.487514
- Max Citation Score: 523.23376
- Similarity Product: 480.8862715361212

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