Method of applying microorganism resistant granules to a continuously moving strip of asphalt coated material
US5573810A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Sep 21, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24413
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of manufacturing a microorganism resistant asphaltic roofing shingle includes supplying a tacky asphaltic strip material having a prime lane, and applying prime granules onto the prime lane to substantially cover the prime lane so that approximately all of the prime granules adhere to the asphaltic strip material. An excessive amount of backfall granules are applied onto the prime lane on top of the prime granules. Prior to applying the prime granules onto the prime lane of the asphaltic strip material, anti-microorganism granules are applied onto the prime lane so that nearly 100 percent of the anti-microorganism granules adhere to the asphaltic strip material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.