Patents per Year
Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5564441 | Pneumatic web feeding | Norman L. Sharp | 1996-10-15 |
| 5560515 | Cigarette weight control | Derek H. Dyett | 1996-10-01 |
| 5471866 | Cigarette testing device | Joseph Anthony Griffiths | 1995-12-05 |
| 5097941 | Conveying rod-like articles | Derek H. Dyett, Dennis Graham-Troll, Adrian Styles | 1992-03-24 |
| 4746006 | Filter cigarette manufacture | John Nixon | 1988-05-24 |
| 4635653 | Spark perforation of web material | Reginald C. Bolt, Derek H. Dyett | 1987-01-13 |
| 4569359 | Method and apparatus for ventilated cigarette manufacture | John R. Nowers | 1986-02-11 |
| 4331165 | Ventilated cigarettes | David J. Farrar, Ralph W. Beck, Edward G. Preston | 1982-05-25 |
| 4325250 | Cigarette testing device | Reginald C. Bolt, John G. Dowding | 1982-04-20 |
| RE30865 | Manufacture of filter-tipped cigarettes | Clifford R. Marritt | 1982-02-16 |
| 4290518 | Filter attachment machines | Derek H. Dyett, Ivan Yehudi Hirsh, Edward G. Preston | 1981-09-22 |
| 4193410 | Apparatus for making ventilated cigarettes | Clifford R. Marritt | 1980-03-18 |