PATENT CLAIM ANALYSIS

Application Number: 16393112
Application Type: Utility
Filing Date: 2019-04
Publication Date: 2019-08
Patent Classification: ["162", "175000"]

Abstract:
The invention relates to a process for preparing self-binding pigment particle suspensions, to a self-binding pigment particle suspension as well as to a paper product comprising self-binding pigment particles and to the use of the self-binding pigment particle suspension in paper applications, such as in paper coating or as filler material.

Claim (Index 1):
A product obtained by a process comprising the following steps of:\n a) providing an aqueous pigment material suspension, wherein the pigment material comprises calcium carbonate; b) providing a starch consisting of at least one anionic starch having a net negative charge; c) mixing the starch of step b) with the aqueous pigment material suspension of step a), wherein the starch is added to the aqueous pigment material suspension in an amount from 0.5 to 20 wt.-%, based on the total weight of the dry pigment material in the suspension, d) grinding the aqueous pigment material and starch of step c) to obtain a suspension of self-binding pigment particles in which the amount of free starch in the suspension is less than 50 wt.-% based on the total amount of starch added in step c) and the pigment material surface charge density after step d) is in the range of +2.5 \u03bcEq/g and \u221210 \u03bcEq/g, wherein grinding step d) is carried out during and/or after step c) at a temperature from 10\u00b0 C. to 40\u00b0 C., and wherein grinding is carried out until the fraction of self-binding pigment particles having a particle size of less than 2 \u03bcm is greater than 20 wt.-% based on the total weight of the pigment particles, as measured with a Mastersizer 2000, and e) optionally concentrating the self-binding pigment particle suspension obtained in step d).

Metadata:
- Claim Count in Document: 50.0
- Percentile: 100.0
- Lexical Diversity: 1.6875
- Patent Class: 162.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14391887', '15469864', '14394632', '15682999', '14396148']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7399288440256208
- 35 USC 102 Novelty (BERT): 0.5791130584269497
- Combined Prediction Score: 0.7238472654657537
- Mean Citation Score: 380.50471000000016
- Max Citation Score: 491.51694
- Similarity Product: 472.461960972898

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