PATENT CLAIM ANALYSIS

Application Number: 16024827
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["204", "252000"]

Abstract:
An electrochemical device converts carbon dioxide to a formic acid reaction product. The device includes an anode and a cathode, each comprising a quantity of catalyst. The anode and cathode each have reactant introduced thereto. A cation exchange polymer electrolyte membrane and an anion exchange polymer electrolyte membrane, are interposed between the anode and the cathode, forming a central flow compartment where a carbon dioxide reduction product, such as formic acid, can be recovered. At least a portion of the cathode catalyst is directly exposed to gaseous carbon dioxide during electrolysis. The average current density at the membrane is at least 20 mA/cm 2 , measured as the area of the cathode gas diffusion layer that is covered by catalyst, and formate ion selectivity is at least 50% at a cell potential difference of 3.0 V.

Claim (Index 4):
The electrochemical device in  claim 3 , wherein the device satisfies a test comprising:\n (1) with said anode open to atmospheric air, introducing a stream of CO 2  humidified at 50\u00b0 C. into said cathode chamber while the device is at room temperature and atmospheric pressure; (2) applying a potential difference of 3.5 V across a cell via an electrical connection between said anode and said cathode with the device at room temperature; (3) measuring the current across said cell and the concentration and production rates of formic acid in said central flow compartment and production rate of CO and H 2  at the exit of said cathode chamber; (4) calculating the formate ion selectivity, Selectivity FO , as follows: Selectivity FO = ( Formate \ue89e \ue89e ion \ue89e \ue89e production \ue89e \ue89e rate ) ( CO \ue89e \ue89e production \ue89e \ue89e rate + H 2 \ue89e \ue89e production \ue89e \ue89e rate + Formate \ue89e \ue89e ion \ue89e \ue89e production \ue89e \ue89e rate ) where the CO, H 2  and formate ion production rates are measured in moles per minute leaving the device. (5) performing steps (1)-(4) with room temperature water being directed to said anode; and (6) determining that the device has satisfied the test if the average current density at the membrane is at least 20 mA/cm 2 , where the cm 2  is measured as the area of said cathode gas diffusion layer on which said catalyst is disposed, and formate ion selectivity is at least 25% at a cell potential difference of 3.5 V.

Metadata:
- Claim Count in Document: 114.0
- Percentile: 94.0
- Lexical Diversity: 1.75294
- Patent Class: 204.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15260213', '14704934', '14704935', '15090477', '15400775']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7862315617594593
- 35 USC 102 Novelty (BERT): 0.6456565310769339
- Combined Prediction Score: 0.7721740586912067
- Mean Citation Score: 397.080708
- Max Citation Score: 618.9507
- Similarity Product: 609.7929890687228

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