Anthony Joseph Clayton

US Patent:

52291715, Jul 20, 1993

Filed:

Dec 23, 1991

Appl. No.:

7/813121

Inventors:

Robert P. Donovan - Durham NC
Ravindran Periasamy - Cary NC
Anthony C. Clayton - Rougemont NC
David S. Ensor - Chapel Hill NC

Assignee:

Research Triangle Institute - Research Triangle Park NC

International Classification:

B05D 104

US Classification:

427483

Abstract:

An apparatus and method including a droplet coating generator for generating a stream of electrically charged coating droplets within an evacuable chamber towards a substrate positioned within the evacuable chamber. A piezoelectric vibrator and orifice plate coupled thereto generate the stream of coating droplets. The coating droplets are urged to move in a sweeping motion across the substrate by at least one pair of opposing spaced apart electrodes powered by an electrical power supply. A uniform coating is thus produced while the evacuable chamber is maintained at subatmospheric pressure as required during typical semiconductor processing. Multiple applications of a photoresist coating may be applied by the coating apparatus without requiring that the evacuable chamber be repeatedly vented and pumped down to subatmospheric pressure.

US Patent:

20180149578, May 31, 2018

Filed:

Jan 23, 2018

Appl. No.:

15/877991

Inventors:

- Research Triangle Park NC, US
Anthony Clint Clayton - Rougemont NC, US
Randall J. Newsome - Apex NC, US
Paul G. Hoertz - Morrisville NC, US

International Classification:

G01N 15/14
G01N 15/02
G01N 21/47
G01N 21/64
G01N 21/53
G01N 15/00

Abstract:

A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light along a longitudinal axis to particles of a sample fluid flowing in the detection cavity. The photo-responsive material surrounds at least a portion of the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to the longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.

US Patent:

20170241893, Aug 24, 2017

Filed:

Feb 19, 2016

Appl. No.:

15/048199

Inventors:

- Research Triangle Park NC, US
Anthony Clint Clayton - Rougemont NC, US
Randall J. Newsome - Apex NC, US
Paul G. Hoertz - Morrisville NC, US

International Classification:

G01N 15/14
G01N 21/53
G01N 21/64

Abstract:

A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light to particles of a sample fluid flowing in the detection cavity. The photo-responsive material faces the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to a longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.