IP Library Granted Patent US 12,624,210
Granted Patent B2
US 12,624,210 · App. 17/959,224 · Granted May 12, 2026

System and method for generating tire rubber asphalt

Inventors: Joseph Randall Bruns (Reno, NV); Hashem Hashemi (Reno, NV)
Assignee: Asphalt Sciences LLC
C08L95/00C04B18/22C08J11/08C08J2321/00
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,624,210
App. No.
17/959,224
Granted
May 12, 2026
Kind
B2
Abstract

A method and system for generating a rapid digestion process (“RDP”) product are described. The method includes receiving a bitumen compound and first heating the bitumen compound to 320° F. to 420° F. The method then proceeds to add tire rubber to the bitumen compound. The bitumen compound and the tire rubber are mixed for 5 minutes to 360 minutes during a second heating to 525° F. to 700° F. Further, sulfur is added to the mixture of tire rubber and bitumen compound. These steps generate the RDP product. The RDP product is then cooled for transfer to a storage vessel.

Claims (19)

1 . A method for generating a modified dissolved tire rubber bitumen compound comprising:

receiving bitumen compound;

heating the bitumen compound to between 320° F. to 420° F.;

adding a tire rubber to the bitumen compound;

mixing the bitumen compound and the tire rubber for 5 minutes to 360 minutes, wherein the bitumen compound and the tire rubber are heated submitted to a second heating of between 525° F. to 700° F. during mixing;

adding sulfur to the mixture of the tire rubber and the bitumen compound; and

cooling the resulting modified dissolved tire rubber bitumen compound.

2 . The method of claim 1 further comprising applying a neutral gas when generating the modified dissolved tire rubber bitumen compound.

3 . The method of claim 1 further comprising cooling the modified dissolved tire rubber bitumen compound to 500° F. to 350° F.

4 . The method of claim 1 further including separating the modified dissolved tire rubber bitumen compound from a metallic alloy.

5 . The method of claim 1 wherein the bitumen compound has a penetration of 0 dmm to 200 dmm.

6 . The method of claim 1 wherein the bitumen compound is received by a reaction vessel, the tire rubber is added to the bitumen compound in the reaction vessel, and the reaction vessel is heated to between 320° F. to 420° F. to generate a first processed tire rubber and bitumen mixture; and

the modified dissolved tire rubber bitumen compound is generated in the reaction vessel by heating the first processed tire rubber and bitumen mixture to 525° F. to 700° F.

7 . The method of claim 1 further comprising cross-linking one of the tire rubber, the bitumen compound, the modified dissolved tire rubber bitumen compound, and any combination thereof with the added sulfur.

8 . The method of claim 1 wherein there is little or no oxidation of the bitumen compound, the tire rubber, and the modified dissolved tire rubber bitumen compound.

9 . The method of claim 1 further comprising:

generating volatile organic compounds (“VOCs”); and

cross-linking at least some of the VOCs with the added sulfur.

10 . The method of claim 1 further comprising applying a vacuum when generating the modified dissolved tire rubber bitumen compound.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 9, 2022
From: HASHEMI, HASHEM; BRUNS, JOSEPH RANDALL
To: ASPHALT SCIENCES LLC
Reel/Frame 062047/0251 →
Continuity (6)
Continuation In Part 17086948 · Nov 2, 2020
Continuation 16255804 · Jan 23, 2019
Continuation In Part 15283821 · Oct 3, 2016
Provisional Application 62661609 · Apr 23, 2018
Provisional Application 62236861 · Oct 3, 2015
Related Publication 20230085865A1 · Mar 23, 2023
References Cited (25)
US 4068023A · Nielsen et al. · 1978 [cited by applicant]
US 4085078A · McDonald · 1978 [cited by applicant]
US 4609696A · Wilkes · 1986 [cited by applicant]
US 5334641A · Rouse · 1994 [cited by applicant]
US 5397818A · Flanigan · 1995 [cited by applicant]
US 5491401A · Inoue et al. · 1996 [cited by applicant]
US 5492561A · Flanigan · 1996 [cited by applicant]
US 5683498A · Hesp · 1997 [cited by applicant]
US 7074846B2 · Sylvester et al. · 2006 [cited by applicant]
US 9540512B2 · Flanigan · 2017 [cited by applicant]
US 9803085B2 · Flanigan · 2017 [cited by applicant]
US 10214617B1 · Bruns et al. · 2019 [cited by applicant]
US 10233120B2 · Flanigan · 2019 [cited by applicant]
US 20010028571A1 · Hanada et al. · 2001 [cited by applicant]
US 20090105376A1 · Korenstra et al. · 2009 [cited by applicant]
US 20110196074A1 · Flanigan · 2011 [cited by examiner]
US 20130088278A1 · Spalding, Jr. et al. · 2013 [cited by applicant]
US 20140261076A1 · Quinn et al. · 2014 [cited by applicant]
US 20160272778A1 · Yuan · 2016 [cited by applicant]
US 20170267864A1 · Flanigan · 2017 [cited by applicant]
EP 2852018A2 · 2015 [cited by applicant]
KR 101239399B1 · 2013 [cited by applicant]
WO 2008088755A2 · 2008 [cited by applicant]
WO 2019209400A1 · 2019 [cited by applicant]
Chivata, D et al., Conceptual Design of a Plant for the Exploitation of Ground Rubber of Used Tires from Pyrolysis, Date: Feb. 2018, p. 33, 89, University of America, Bogota Colombia. [cited by applicant]