PATENT CLAIM ANALYSIS

Application Number: 15767379
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["315", "122000"]

Abstract:
AC LED light engines powered directly from the AC power line contain circuitry of resistors, capacitors, diodes and transistors which enables an array of LEDs to efficiently produce light with a relatively low level of flicker as perceived by the human eye. The LEDs are driven by a current which is alternately capacitively-limited and resistively-limited. Capacitively-limited pulses of current are combined with resistively-limited pulses of current so that the resulting output current ripple is at frequencies of 240 Hz or above which the human eye cannot perceive. The combination of resistively-limited current and capacitively-limited current results in a current drain from the power line which is generally sinusoidal and can have a power factor in excess of 0.90, and a flicker index below 0.2.

Claim (Index 8):
A driverless LED light engine having first and second input terminals connected to an AC power source, the LED light engine comprising:\n a plurality of LED devices connected in series as an LED string having a first end termination and a second, opposing end termination, the LED string defined as comprising a plurality of LED substrings with a midpoint of the LED string connected to the first input terminal; a first rectifier diode coupled between the second input terminal of the AC power source and the first end termination of the LED string so as to permit current flow during positive voltage half cycles; a second rectifier coupled between the second input terminal of the AC power source and the second end termination of the LED string so as to permit current flow during negative voltage half cycles; a first capacitor connected from a cathode of the first rectifier diode to an intermediate point on the LED string between the midpoint and the second termination so as to be in parallel with a first plurality of LED sub strings; and a second capacitor connected from an anode of the second rectifier diode to an intermediate point on the LED string between the midpoint and the first termination so as to be in parallel with a second plurality of LED substrings.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 91.0
- Lexical Diversity: 1.71429
- Patent Class: 315.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14884879', '14595565', '15130033', '12799953', '15744110']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7640678846658736
- 35 USC 102 Novelty (BERT): 0.6408087349902443
- Combined Prediction Score: 0.7517419696983108
- Mean Citation Score: 437.838064
- Max Citation Score: 596.415
- Similarity Product: 591.5486475750803

Labels:
- Claim Label 101: 0
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test