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C04B 41/478

Bitumen, asphalt

Official title: {Bitumen, asphalt, e.g. paraffin}

C04B41/478 (Bitumen, asphalt) appears on 23 US grants and 11 published applications in this corpus.

Search patents in C04B

Granted patents: 23
Published applications: 11
Assignees: 27
Inventors: 69
Latest grant: 25 Nov 2025

Filings by year

C04B 41/478: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	1	0
1977	1	0
1978	1	0
1979	0	0
1980	3	0
1981	1	0
1982	0	0
1983	1	0
1984	2	0
1985	3	0
1986	1	0
1987	1	0
1988	0	0
1989	0	0
1990	0	0
1991	1	0
1992	2	0
1993	0	0
1994	0	0
1995	0	0
1996	0	0
1997	0	0
1998	0	0
1999	0	0
2000	0	0
2001	0	0
2002	0	0
2003	0	0
2004	0	2
2005	0	1
2006	2	0
2007	0	0
2008	0	0
2009	0	1
2010	0	0
2011	0	0
2012	0	0
2013	0	0
2014	0	0
2015	0	0
2016	0	0
2017	0	0
2018	0	0
2019	0	0
2020	0	1
2021	0	1
2022	0	1
2023	0	2
2024	2	1
2025	1	1

By publication year. Applications have been published since 2001.

Recent patents

Marine ecological engineering construction method, asphalt cement-based coating, and preparation method thereof25 Nov 2025US 12,478,048 B2
Method of curing reinforced concrete17 Sep 2024US 12,091,367 B2King Saud University
Methods, materials systems, and devices for inhibiting infiltration and penetration of molten salts into solid materials6 Feb 2024US 11,891,343 B2Purdue Research Foundation
Method of resisting corrosion in metal reinforcing elements contained in concrete and related compounds and structures5 Sep 2006US 7,101,429 B2352 East Irvin Avenue Limited Partnership
Method of resisting corrosion in metal reinforcing elements contained in concrete and related compounds and structures25 Jul 2006US 7,081,156 B2352 East Irvin Avenue Limited Partnership

Most cited

By later US patents