Granted Patent B1

US 12,305,396 · App. 18/384,594 · Granted May 20, 2025

Inventors: Jonathon MacBride (Greencastle, PA); David Kragten (Williamsport, MD); Daniel Rardon (Greencastle, PA); Justin Dunlap (Waynesboro, PA); Jared Horner (Hagerstown, MD); Derek Small (Mercersburg, PA)

Assignee: Specialty Granules Investments LLC

E04D11/02C08L95/00

Abstract

Claims (37)

1. A roofing granule comprising:

a sterilized roofing shingle waste core,

wherein the sterilized roofing shingle waste core comprises:

a sterilized base particle; and

at least 0.5% by weight of a sterilized asphalt residue based on a total weight of the sterilized roofing shingle waste core;

wherein the sterilized roofing shingle waste core, when tested according to an organism growth testing method, does not exhibit a green growth at an interface between the sterilized roofing shingle waste core and a testing solution after a duration of one month; and

a colored coating,

wherein the sterilized asphalt residue is located between the sterilized base particle and the colored coating;

wherein the colored coating covers at least a portion of the sterilized asphalt residue.

2. The roofing granule of claim 1 , wherein the sterilized asphalt residue covers 1% to 99% of the sterilized base particle.

3. The roofing granule of claim 1 , wherein the colored coating covers 1% to 99% of the sterilized asphalt residue.

4. The roofing granule of claim 1 , wherein the colored coating covers 1% to 99% of the sterilized roofing shingle waste core.

5. The roofing granule of claim 1 , wherein the sterilized asphalt residue contacts the sterilized base particle.

6. The roofing granule of claim 1 , wherein the colored coating contacts the sterilized asphalt residue.

7. The roofing granule of claim 1 , wherein the colored coating contacts the sterilized roofing shingle waste core.

8. The roofing granule of claim 1 , wherein the sterilized roofing shingle waste core comprises 0.5% to 50% by weight of the sterilized asphalt residue based on the total weight of the sterilized roofing shingle waste core.

9. The roofing granule of claim 1 , wherein the sterilized roofing shingle waste core comprises 5% to 50% by weight of the sterilized asphalt residue based on the total weight of the sterilized roofing shingle waste core.

10. The roofing granule of claim 1 , wherein the roofing granule comprises 0.1% to 50% by weight of the sterilized asphalt residue based on a total weight of the roofing granule.

11. A method comprising:

obtaining a sterilized roofing shingle waste core,

wherein the sterilized roofing shingle waste core comprises:

a sterilized base particle; and

at least 0.5% by weight of a sterilized asphalt residue based on a total weight of the sterilized roofing shingle waste core;

wherein the sterilized roofing shingle waste core, when tested according to an organism growth testing method, does not exhibit a green growth at an interface between the sterilized roofing shingle waste core and a testing solution after a duration of one month;

obtaining a colored coating composition;

applying the colored coating composition to the sterilized roofing shingle waste core; and

curing the colored coating composition, so as to form a colored coating on a roofing granule;

wherein the sterilized asphalt residue is located between the sterilized base particle and the colored coating;

wherein the colored coating covers at least a portion of the sterilized asphalt residue.

12. The method of claim 11 , wherein the sterilized asphalt residue covers 1% to 99% of the sterilized base particle.

13. The method of claim 11 , wherein the colored coating covers 1% to 99% of the sterilized asphalt residue.

14. The method of claim 11 , wherein the colored coating covers 1% to 99% of the sterilized roofing shingle waste core.

15. The method of claim 11 , wherein the sterilized asphalt residue contacts the sterilized base particle.

16. The method of claim 11 , wherein the colored coating contacts the sterilized asphalt residue.

17. The method of claim 11 , wherein the colored coating contacts the sterilized roofing shingle waste core.

18. The method of claim 11 , wherein the sterilized roofing shingle waste core comprises 0.5% to 50% by weight of the sterilized asphalt residue based on the total weight of the sterilized roofing shingle waste core.

19. The method of claim 11 , wherein the sterilized roofing shingle waste core comprises 5% to 50% by weight of the sterilized asphalt residue based on the total weight of the sterilized roofing shingle waste core.

Assignments (1)

Continuity (4)

References Cited (87)