SoyLei commercializes eleven licensed Iowa State University Research Foundation technology families spanning plant-oil polymer chemistry, asphalt rejuvenation, polymer-modified asphalt, recycled pavement, maintenance treatments, and cold recycling. The portfolio connects soybean-oil chemistry with practical asphalt formulation from the terminal through pavement construction and maintenance.
The representative U.S. records below were reconciled against SoyLei’s executed license schedules. The portfolio comprises five families with issued U.S. patents, four represented by published U.S. applications, and two development-stage families awaiting public patent records. Patent scope and legal status are defined by the official records.
Issued U.S. patent families
Plant-oil elastomer platform
- US 10,570,238 B2, issued February 25, 2020
- US 9,932,435 B2, issued April 3, 2018
Triglyceride polymer platform
- US 10,752,711 B2, issued August 25, 2020
- US 10,730,975 B2, issued August 4, 2020
- US 10,093,758 B2, issued October 9, 2018
- US 9,926,392 B2, issued March 27, 2018
- US 9,650,463 B2, issued May 16, 2017
Asphalt rejuvenation chemistry
- US 11,370,918 B2, issued June 28, 2022
- US 10,570,286 B2, issued February 25, 2020
Reactive rejuvenator chemistry
- US 11,773,265 B2, issued October 3, 2023
Surface-maintenance chemistry
- US 12,297,150 B2, issued May 13, 2025
Published U.S. application families
- Polymer-modified asphalt platform: US 2022/0033305 A1
- Reactive polymer processing platform: US 2024/0199871 A1
- Graft-elastomer platform: US 2024/0166792 A1
- Cold-recycling emulsion platform: US 2024/0084141 A1
Together, these families support a layered materials platform. Reactive plant-oil chemistry addresses aged asphalt binder, while polymer families provide tools for extending modifier performance and building cohesive recycled-material systems. That combination supports formulation work across hot-mix asphalt, pavement preservation, and cold-recycling applications.
From university chemistry to asphalt production
The portfolio supports a connected commercial strategy: use renewable-oil chemistry to restore aged binder, formulate difficult refinery streams, extend polymer-modified asphalt performance, and increase the value recovered from recycled pavement materials. SIP-1111™ is the reactive rejuvenator at the center of that asphalt platform.
Review SIP-1111™ · Discuss licensing and formulation applications
Source Documents
- SoyLei License-Scope Review and Public Patent Records, SoyLei Innovations, LLC, 2026-07-23 Individual public patent records are linked in the article.
