Microlithographically Fabricated Chips and Microelectrodes for Chemical and

Microlithographically Fabricated Chips and Microelectrodes for Chemical and Biological Sensor Research and Development ABTECH Scientific, Inc. Virginia Biotechnology Research Park 800 East Leigh Street, Suite 52 Richmond, Virginia 23219 USA sales@abtechsci. com http: //www. abtechsci. com 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microfabricated Interdigitated Microsensor Electrodes (IMEs) AFM Profile of 15 mm IME XX 50. 5 M, CD, FD; Au, Pt, ITO IME XX 25. 3 M, CD, FD; Au, Pt, ITO XX = 05, 10, 15, 20 mm AFM Profile of 15 mm IME M = Monolithic CD = Combined Differential FD = Full Differential 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microfabricated Interdigitated Microsensor Electrodes (IMEs) Sensor Test Clip (STC-4) Sensor Test Clip (STC-7) 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microfabricated Interdigitated Microsensor Electrodes (IMEs) XX = 5, 10, 15, 20 mm 9/10/2020 IME XX 50. 5 M, CD, FD; Au, Pt, ITO ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microfabricated Interdigitated Microsensor Electrodes (IMEs) IME 2050. 5 -M, CD and FD-Au-P IME 0550. 5 -M, CD and FD-Pt-P 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microelectrodes Oxygen Microelectrodes 9/10/2020 p. H and REF Microelectrodes ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Liquid Flow Cell Detector IME 1010. 3 FD Au, Pt, ITO 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Gas / Vapor Flow Cell Detector IME 1010. 3 FD Au, Pt, ITO 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Sensor Arrays of VOC Responsive Polymers for the Electronic NOSE Chips of 5μm, 10μm, 15μm and 20μm with electropolymerized PPy, PTh or PAn 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microdisc Electrode Arrays 1 MDEA XXX Au, Pt 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microdisc Electrode Arrays 2 50 mm 9/10/2020 x 50 MDEA DEVICES Disc dimensions / Number of Discs Active Area Conductor MDEA 3600 D = 3, 600 mm 1 disc 0. 10 cm 2 Au, Pt, ITO MDEA 250 D = 250 mm 207 microdiscs 0. 10 cm 2 Au, Pt, ITO MDEA 100 D = 100 mm 1, 296 microdiscs 0. 10 cm 2 Au, Pt, ITO MDEA 050 D = 50 mm 5, 184 microdiscs 0. 10 cm 2 Au, Pt, ITO 100 mm x 50 250 mm 3600 mm x 50 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA. x 50

Microdisc Electrode Arrays 3 5, 184 microdiscs 50 mm 1, 296 microdiscs 100 mm 207 microdiscs 250 mm 3600 mm 1 macro disc 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microdisc Electrode Arrays 4 PAn. Cl on MDEA 50 Au x 50 PAn. Cl on MDEA 100 Au x 50 öTotal current density applied = 100 m. A/cm 2 öTotal time = 20 s öTotal charge density = 2 C/cm 2 PAn. PSS on MDEA 50 Au x 50 PAn. PSS on MDEA 100 Au x 50 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microband Electrodes Independently Addressable Microband Electrodes (IAMEs) IAME XX 04, Au, Pt or ITO XX = 5, 10, 15, 20 mm 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Microband Electrodes Independently Addressable Interdigitated Microsensor Electrodes (IAIMEs) IAIME XX 10, Au, Pt or ITO XX = 5, 10, 15, 20 mm 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Electrochemical Cell-on-a-Chip (ECC) A B C D E F G 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Electrochemical Cell-on-a-Chip (ECC) ECC IME XX 04, Au, Pt or ITO 1 cm XX = 05, 10, 15, 20 mm C 1 C 2 A B C D E F G 2 cm 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Electrochemical Cell-on-a-Chip (ECC) Counter Electrode Unsilverized Interdigitated WE 1 and WE 2 Reference Electrode, Ag/Ag. Cl Silverized Si 3 N 4 Passivation Layer Unmodified Polypyrrole modified 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

Electrochemical Cell-on-a-Chip (ECC) Integrated in a Microfluidic Cassette Polypyrrole modified 9/10/2020 An integrated biochip showing the microfabricated pattern of electrodes bonded and sealed into the Microncs’ microfluidic T-cassette. ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

IAME-co-IME 2 -1 Au, Pt Independently Addressable Microband Electrodes and Microfrabricated Interdigitated Microsensor Electrodes) 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

IAME-co-IME 2 -1 Au, Pt Independently Addressable Microband Electrodes and Microfrabricated Interdigitated Microsensor Electrodes) 4 bands 3 mm long 2 mm lines, 1 mm space 5 + 5 fingers 3 mm long 2 mm lines, 1 mm space 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

IAME-co-IME 2 -1 Au, Pt 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

IAME-co-IME 2 -1 Au, Pt Independently Addressable Microband Electrodes and Microfrabricated Interdigitated Microsensor Electrodes) 2 m line 1 m space 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

ABTECH’s Patents A. Guiseppi-Elie; US Patent No. 5, 766, 934; Issued on June 16, 1998. "Chemical and Biological Sensor Devices Having Electroactive Polymer Thin Films Attached to Microfabricated Devices and Possessing Immobilized Indicator Moieties". A. Guiseppi-Elie; US Patent No. : 5, 352, 574; Issued on: October 4 th, 1994. "Electroactive Polymers with Immobilized Active Moieties". A. Guiseppi-Elie; US Patent No. : 5, 312, 762; Issued on: May 17 th, 1994. "Method of Measuring an Analyte by Measuring Electrical Resistance of a Polymer Film Reacting with the Analyte". 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.

People Management Team Board of Directors James W. Sharpe, MBA Chairman and CEO James W. Sharpe, MBA Chairman Anthony Guiseppi-Elie, Sc. D. President and Scientific Director James R. Funkey, MA, CPA VP and Controller Annette Guiseppi-Elie, Ph. D. Ann M. Wilson, Ph. D. Director, Applications Development Cynthia Garwon-Burke, Ph. D. Scientific Advisory Board Anthony Guiseppi-Elie, Sc. D. David Allara, Ph. D. Patent and IP Council Norman Sheppard, Jr. Ph. D. Leigh P. Gregory Patent Attorney Clemson, SC, USA 9/10/2020 ABTECH Scientific, Inc. 800 East Leigh Street VA Bio. Tech Center Richmond Virginia 23219 -1535 USA.