PATENT CLAIM ANALYSIS

Application Number: 15769541
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["148", "226000"]

Abstract:
A method of producing a carburizing forging material includes heating a steel material at 1300° C. or higher, forming Nb in a solid solution state and then rolling the steel material, heating the rolled steel material in a range of 950 to 1050° C., hot forging the heated steel material in a range of 950 to 1040° C., precipitating a Nb carbonitride in the steel material by cooling the steel material or maintaining a temperature of the steel material under a condition in which a time spent in a range of 950 to 970° C. is 1 minute or longer, precipitating a ferrite phase in the steel material by cooling the steel material or maintaining a temperature of the steel material under a condition in which a time spent in a range of 730 to 870° C. is 10 minutes or longer, and cooling the steel material to room temperature.

Claim (Index 1):
A method of producing a carburizing forging material from a steel material that includes C: 0.20 to 0.30 mass %, Si: 0.03 to 1.50 mass %, Mn: 0.30 to 1.00 mass %, Cr: 0.30 to 2.50 mass %, Al: 0.025 to 0.100 mass %, N: 0.0120 to 0.0180 mass %, Nb: 0.05 to 0.10 mass %, and Mo: 0 to 0.80 mass %, and a balance: Fe and inevitable impurities, the method comprising:\n heating the steel material at 1300\u00b0 C. or higher and forming Nb in a solid solution state in the steel material and then rolling the steel material; heating the steel material under a heating condition in a range of 950 to 1050\u00b0 C. after the steel material is rolled; hot forging, under a heating condition in a range of 950 to 1040\u00b0 C., the steel material that is heated under the heating condition in the range of 950 to 1050\u00b0 C.; precipitating a Nb carbonitride in the steel material by cooling the steel material or maintaining a temperature of the steel material under a condition in which a time spent in a temperature range of 950 to 970\u00b0 C. is 1 minute or longer after the steel material is hot forged; precipitating a ferrite phase in the steel material by cooling the steel material or maintaining a temperature of the steel material under a condition in which a time spent in a temperature range of 730 to 870\u00b0 C. is 10 minutes or longer during cooling after the Nb carbonitride is precipitated in the steel material; and cooling the steel material to room temperature after the ferrite phase in the steel material is precipitated.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 91.0
- Lexical Diversity: 2.66102
- Patent Class: 148.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13061023', '13461125', '11035766', '11990793', '13696714']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.760377313629995
- 35 USC 102 Novelty (BERT): 0.5233238996555635
- Combined Prediction Score: 0.7366719722325519
- Mean Citation Score: 269.542328
- Max Citation Score: 275.9945
- Similarity Product: 201.2839300446809

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