PATENT CLAIM ANALYSIS

Application Number: 15873125
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["549", "534000"]

Abstract:
A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising: (i) impregnating a porous refractory carrier with a sub-catalytic level of silver ion in a range of 0.1 wt % to 1 wt % of silver by weight of the carrier and silver, and at least partially reducing said silver ion to elemental silver to produce a low-silver catalyst precursor having isolated silver atoms or silver nanoparticles on surfaces of said refractory carrier; and (ii) further impregnating the low-silver catalyst precursor with a catalytic amount of silver ion of at least 10 wt % total amount of silver and at least one promoting species by weight of the carrier and silver, and subjecting the further impregnated carrier to an elevated temperature of at least 200° C. to completely reduce silver ion to elemental silver in the carrier. The low-silver catalyst precursor produced in step (i) is also described in detail. Methods for using the catalyst produced in step (ii) for the oxidative conversion of ethylene to ethylene oxide are also described.

Claim (Index 14):
The method of  claim 1 , wherein the refractory carrier is comprised of an alumina.

Metadata:
- Claim Count in Document: 71.0
- Percentile: 86.0
- Lexical Diversity: 2.33333
- Patent Class: 549.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14279826', '14575035', '14144747', '15054447', '14143684']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7604205973906808
- 35 USC 102 Novelty (BERT): 0.5045418434453005
- Combined Prediction Score: 0.7348327219961428
- Mean Citation Score: 286.3009780000001
- Max Citation Score: 295.75128
- Similarity Product: 251.1257769631148

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