Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4993868 | Continuous prefabricated road-marking tape with composite structure and passive and active optical effect completely independent from outside investment and external energy source | — | 1991-02-19 |
| 4990024 | Preformed polyurethane roadway-marking strip which is highly conformant to road surface roughness | — | 1991-02-05 |
| 4925335 | Prefabricated continuous roadmarking tape having optical and electromagnetic function | — | 1990-05-15 |
| 4708518 | Method of adhering a prefabricated marking strip to a roadway surface without having to treat the roadway surface and self-adhesive sealing strip itself | — | 1987-11-24 |
| 4685824 | Road marking provided with protruding elements capable of resisting to snow plowing implements | — | 1987-08-11 |
| 4681480 | Method for forming roadway-marking means whereby individual retroreflecting elements are gathered and grouped together | — | 1987-07-21 |
| 4652172 | Method and equipment for improving horizontal marking strips | — | 1987-03-24 |
| 4607978 | Method and equipment for improving horizontal marking strips | — | 1986-08-26 |
| 4565467 | Method and apparatus for the continuous laying road marking strips onto roadway surfaces | — | 1986-01-21 |
| RE31669 | Anti-skid, wear- and stress-resisting road marking tape material | — | 1984-09-11 |
| 4469645 | Production of transparent globules | — | 1984-09-04 |
| 4461862 | Self extinguishing polymeric compositions, which upon contacting a flame provide a nondropping char-forming incandescent crust, and which do not produce flame neither toxic fumes | — | 1984-07-24 |
| 4416510 | Retroreflective structure and method of manufacturing the same | — | 1983-11-22 |
| 4411553 | Retro-reflecting globules for road surface marking | — | 1983-10-25 |
| RE31291 | Road surface marking prefabricated tape material, having retroreflective composite elements associated thereto | — | 1983-06-28 |
| 4376007 | Machine for preparing road surfaces and forming traffic regulating lines thereon | — | 1983-03-08 |
| 4369001 | Method for forming highly retro-reflecting roadway surface marking | — | 1983-01-18 |
| 4322177 | Method and devices for forming highly retro-reflecting roadway surface marking | — | 1982-03-30 |
| 4288487 | Method of forming surface markings on roadway areas, and roadway areas produced thereby | — | 1981-09-08 |
| 4279534 | Method and apparatus for applying horizontal road marking material of high optical efficiency | — | 1981-07-21 |
| 4236950 | Road marking machine and method | — | 1980-12-02 |