Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H1293 | Contact hazard monitor | — | 1994-03-01 |
| H1040 | Method for measuring filter efficiency | Mark A. Guelta, Bernard V. Gerber | 1992-04-07 |
| 5097212 | Cell for measuring electrical conductivity and ion content of vapor | Rex M. Pritt | 1992-03-17 |
| 5094779 | Method for measuring and testing the efficiency of gas mask filters using monodispersed aerosols | Mark A. Guelta, Bernard V. Gerber | 1992-03-10 |
| 5087389 | Method of measuring the efficiency of gas mask filters using non-toxic mono dispersed aerosols | Mark A. Guelta, Bernard V. Gerber | 1992-02-11 |
| 5080829 | Method of measuring the efficiency of gas mask filters, respirators and other personnel protective equipment | Mark A. Guelta, Bernard V. Gerber | 1992-01-14 |
| 5076965 | Method of generating mono dispersed aerosols for non-destructive gas mask filter testing | Mark A. Guelta | 1991-12-31 |
| 5059349 | Method of measuring the efficiency of gas mask filters using monodispersed aerosols | Mark A. Guelta, Bernard V. Gerber | 1991-10-22 |
| 5059348 | Method for measuring the efficiency of gas mask filters | Mark A. Guelta | 1991-10-22 |
| 5059350 | Method of testing the efficiency of gas mask filters using poly-alpha olefin aerosol mixtures | Mark A. Guelta, Bernard V. Gerber | 1991-10-22 |
| 5059351 | Method of testing the efficiency of gas mask filters using monodispersed aerosols | Mark A. Guelta, Bernard V. Gerber | 1991-10-22 |
| 5059352 | Method for the generation of monodispersed aerosols for filter testing | Mark A. Guelta, Bernard V. Gerber | 1991-10-22 |
| 5059353 | Method for testing the efficiency of gas mask filters using monodispersed aerosols | Mark A. Guelta, Bernard V. Gerber | 1991-10-22 |
| 5052618 | Method and apparatus for protecting crops from frost by jet-dispersed, microencapsulated aerosols | Raymond P. Tytus, Arthur Stuempfle | 1991-10-01 |
| H923 | Accelerated fabric drying and decontaminating apparatus and method | — | 1991-06-04 |
| H839 | Fabric moisture detector | — | 1990-11-06 |
| 4568190 | Electrooptical system and technique for direct quantitative measurement of the mass concentration of monodisperse aerosols | David V. Kimball, Robert J. Wright | 1986-02-04 |
| 4343177 | Flow compensated gas comparison probe | Bernard V. Gerber | 1982-08-10 |
| 4270084 | Apparatus and method for determining electrical conductivity of water vapor | Rex M. Pritt | 1981-05-26 |