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 15):
An extreme ultraviolet (EUV) light source, comprising:\n an EUV vessel having an EUV vessel purge gas inlet and an EUV vessel purge gas outlet, the EUV vessel purge gas inlet configured to be coupled to a purge gas source for supplying 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 dispenser for supplying a quantity of target material into the EUV vessel; and a hydrogen radical source disposed within the EUV vessel, the hydrogen radical source is defined by a capacitively coupled chamber having grounded walls and an electrode coupled to a signal source, the hydrogen radical source is configured to receive a flow of hydrogen and produce hydrogen radicals proximate to the reflective surface of the EUV collector when the signal source is active during operation, wherein during operation the hydrogen radicals combine with a portion of target material disposed on the reflective surface to remove the portion of target material as a volatile compound, the EUV vessel purge gas outlet used to purge the volatile compound from 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): 0.7250442269484362
- 35 USC 102 Novelty (BERT): 0.5004124544007199
- Combined Prediction Score: 0.7025810496936646
- Mean Citation Score: 254.740684
- Max Citation Score: 286.8437
- Similarity Product: 230.83675674111248

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