PATENT CLAIM ANALYSIS

Application Number: 16007513
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["356", "439000"]

Abstract:
An apparatus for measuring the optical absorption of airborne matter or other light absorbing species in a sample airflow. The apparatus comprises a flow path through a fibrous filter to collect light absorbing species in the sampled air. The filtered airflow may subsequently pass through a second filter, used for reference measurements. At least one light source impinges in the filter generating one or two optical signals to determine the light absorption of particulate matter or other species in the sampled airflow. The apparatus includes at least one auxiliary sensor in the sample flow path to monitor an environmental factor, such as temperature. During a training period, a mathematical model of the apparatus' environmental sensitivity is derived. Using the mathematical model and measurements from the auxiliary sensor, optical signals are compensated in real time to increase the precision and accuracy of light absorption measurements recorded under fluctuating environmental conditions.

Claim (Index 18):
A method of calibrating an instrument for measuring light absorption of matter in a sample air stream entering the instrument, the instrument including a light source, at least one filter receiving the sample air stream, and at least one light detector for generating a sample signal and a reference signal from light passed through said at least one filter, comprising the steps of:\n placing the at least one filter on the instrument to substantially remove light absorbing matter from said air sample stream; passing said sample air stream through said at least one filter for a predetermined period of time; directing light from said light source through said at least one filter during said predetermined time period to generate first sample and reference signals, respectively; measuring an environmental factor of said sample air stream over said predetermined period of time; correlating said environmental factor of said sample air stream with the values of said first sample and first reference signals to obtain an environmental compensation value; removing said inlet filter from said instrument; passing said sample air stream through said at least one filter; directing light from said light source through said at least one filter to generate second sample and reference signals, respectively; and applying said environmental compensation factor to said second sample and reference signals to obtain environmental compensated sample and reference signals, respectively; and comparing said environmental compensated sample and reference signals to determine the optical absorption of matter in the sample air stream.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 94.0
- Lexical Diversity: 1.91667
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15880244', '11193204', '15504727', '12975396', '13601288']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6949953136884596
- 35 USC 102 Novelty (BERT): 0.460682758037404
- Combined Prediction Score: 0.6715640581233541
- Mean Citation Score: 150.49728000000005
- Max Citation Score: 154.88065
- Similarity Product: 119.78258201631904

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