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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12767827 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Jan. 12, 2021

Sulphur additive and sulphur modified bitumen

Applicant:

Hindustan Petroleum Corporation Limited, Bangalore, IN;

Inventors:

Eswararao Doni, Bangalore, IN;

Siva Kesava Raju Chinthalapati, Bangalore, IN;

Raghava Krishna Kanala, Bangalore, IN;

Narayanan Krishnamurthy, Bangalore, IN;

Ravi Balasubramaniam, Bangalore, IN;

Assignee:

HINDUSTAN PETROLEUM CORPORATION LIMITED, Bangalore, IN;

Attorney:

Workman Nydegger

Primary Examiner:

Alexandra M Moore

Int. Cl.
CPC ...
C08L 95/00 (2006.01); C08K 13/02 (2006.01); C08K 13/08 (2006.01); E01C 7/26 (2006.01); C08K 3/06 (2006.01); C08K 3/34 (2006.01); C08K 5/098 (2006.01); C08K 5/105 (2006.01); C08K 11/00 (2006.01);
U.S. Cl.
CPC ...
C08L 95/00 (2013.01); C08K 13/02 (2013.01); C08K 13/08 (2013.01); E01C 7/267 (2013.01); C08K 3/06 (2013.01); C08K 3/346 (2013.01); C08K 5/098 (2013.01); C08K 5/105 (2013.01); C08K 11/005 (2013.01); C08K 2201/014 (2013.01); C08L 2555/54 (2013.01);
Abstract

The present disclosure discloses an additive for preparing modified bitumen comprising a) sulphur with a weight percentage in the range of 90-95% with respect to the additive; b) at least two H2S suppressants with a combined weight percentage in the range of 4-7% with respect to the additive; c) bitumen with a weight percentage in the range of 0.5-3% with respect to the additive; and d) at least one smell masking agent in the range of 0.05-1.0% with respect to the additive. The present disclosure provides a convenient process for the preparation of the additive. The present disclosure also reveals a sulphur modified bitumen and a process for preparing the sulphur modified bitumen.

Find Patent Forward Citations

Doni, Eswararao. (2026). Sulphur additive and sulphur modified bitumen (U.S. Patent No. 12767827). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12767827

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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