PATENT CLAIM ANALYSIS

Application Number: 15887935
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["250", "50400R"]

Abstract:
A system and method of removing target material debris deposits simultaneously with generating EUV light includes generating hydrogen radicals in situ in the EUV vessel, proximate to the target material debris deposits and volatilizing the target material debris deposits and purging the volatilized target material debris deposits from the EUV vessel without the need of an oxygen containing species in the EUV vessel.

Claim (Index 12):
An extreme ultraviolet (EUV) light source comprising:\n an EUV vessel having an EUV vessel purge gas inlet, the EUV purge gas inlet configured to be coupled to a purge gas source for dispensing a quantity of purge gas into the EUV vessel; an EUV collector disposed in the EUV vessel, the EUV collector having a reflective surface; a target material source for dispensing a quantity of target material into the EUV vessel; a hydrogen radical source disposed within the EUV vessel, the hydrogen radical source comprising a capacitively coupled hydrogen plasma chamber, the capacitively coupled hydrogen plasma chamber comprising:\n grounded walls; \n a hydrogen radical source outlet disposed proximate to the reflective surface of the EUV collector; \n a hydrogen source inlet configured to be coupled to a hydrogen source; \n a hydrogen source electrode configured to be coupled to a signal source and disposed within the grounded walls for generating a capacitively coupled plasma during operation of the EUV light source to produce hydrogen radicals that combine with at least a portion of a target material debris deposit disposed on the reflective surface of the EUV collector to generate a volatile compound; and \n an EUV vessel purge outlet for passing the volatile compound out of the EUV vessel.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 88.0
- Lexical Diversity: 1.80556
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14061087', '14740916', '14022026', '12725167', '15453884']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7253536763359884
- 35 USC 102 Novelty (BERT): 0.4982052537809345
- Combined Prediction Score: 0.702638834080483
- Mean Citation Score: 254.740684
- Max Citation Score: 286.8437
- Similarity Product: 240.4165496029377

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test