PATENT CLAIM ANALYSIS

Application Number: 16235301
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["423", "648100"]

Abstract:
A hydrogen production apparatus including a desulfurizer, a reformer, a CO transformer a gas flow path, and a purge gas supply path which is provided where a purge gas is supplied to an upstream side of a pressure feeding apparatus in the gas flow path, prior to a stopping operation, a purging step of replacing gas within the gas flow path with the purge gas and filling the purge gas into the gas flow path is performed, and in a start-up operation in which a heating means is operated to increase the temperature of the gas within the gas flow path, which is performed prior to a hydrogen purification operation, a pressure increasing step of supplying the purge gas from the purge gas supply path to the closed circulation circuit and increasing the pressure within the closed circulation circuit is performed.

Claim (Index 2):
The hydrogen production apparatus according to  claim 1 ,\n comprising a first return path having a small flow path cross-sectional area that sets a large flow path resistance, and a second return path having a large flow path cross-sectional area that sets a small flow path resistance, wherein the first return path and the second return path are arranged in parallel in a return path that returns and circulates gas while bypassing the hydrogen purification unit in the closed circulation circuit, and a throttle unit that switches between a throttled state in which a large flow path resistance of the return path is set by opening a first on/off valve provided in the first return path and closing a second on/off valve provided in the second return path, and a throttle released state in which a small flow path resistance of the return path is set by opening at least the second on/off valve provided in the second return path, is provided, and wherein the control apparatus is configured to perform the pressure increasing step with the throttle unit switched to the throttled state.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 98.0
- Lexical Diversity: 2.67857
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15541398', '13497730', '10481925', '14583149', '12800988']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7549736448972783
- 35 USC 102 Novelty (BERT): 0.533036322947727
- Combined Prediction Score: 0.7327799127023231
- Mean Citation Score: 224.26861
- Max Citation Score: 368.5884
- Similarity Product: 347.76279738371375

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