PATENT CLAIM ANALYSIS

Application Number: 15901763
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["315", "111410"]

Abstract:
A miniature Hall current plasma source apparatus having magnetic shielding of the walls from ionized plasma, an integrated discharge channel and gas distributor, an instant-start hollow cathode mounted to the plasma source, and an externally mounted keeper, is described. The apparatus offers advantages over existing other Hall current plasma sources having similar power levels, including: lower mass, longer lifetime, lower part count including fewer power supplies, and the ability to be continuously adjustable to lower average power levels using pulsed operation and adjustment of the pulse duty cycle. The Hall current plasma source can provide propulsion for small spacecraft that either do not have sufficient power to accommodate a propulsion system or do not have available volume to incorporate the larger propulsion systems currently available. The present low-power Hall current plasma source can be used to provide energetic ions to assist the deposition of thin films in plasma processing applications.

Claim (Index 7):
A Hall current plasma source, comprising:\n a cylindrical magnetizable core having a first end and a second end and a first axis, said cylindrical magnetizable core having an outer surface; a conducting wire coil wound around the outer surface of said cylindrical magnetizable core; a first cylindrical magnetic screen having a second axis collinear with the first axis enclosing said conducting wire coil, said first cylindrical magnetic screen having an outer diameter; a second cylindrical magnetic screen having a third axis collinear with the first axis, and an inner diameter which is larger than the outer diameter of said first cylindrical magnetic screen, forming an annular region therebetween; at least one cylindrical anode band disposed in the annular region; an annular ion channel having an open end and a closed end formed in the annular region adapted to electrically isolate said first cylindrical magnetic screen and said second cylindrical magnetic screen from said at least one cylindrical anode band; a gas plenum adapted to receive a first chosen gas and for distributing the first chosen gas into said annular ion channel; and a hollow cathode discharge apparatus for ionizing a second chosen gas disposed on or above the second end of said cylindrical magnetizable core.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 88.0
- Lexical Diversity: 1.64646
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15424385', '14263970', '12202252', '15091433', '13768788']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6835733721656535
- 35 USC 102 Novelty (BERT): 0.5843189281894261
- Combined Prediction Score: 0.6736479277680307
- Mean Citation Score: 263.185926
- Max Citation Score: 480.3551
- Similarity Product: 418.71811977887154

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