C10C WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
Introduced: September 1968
Description
C10C covers industrial processes for refining and processing tar, pitch, asphalt, and bitumen derived from petroleum, coal, or wood, as well as the treatment of pyroligneous acid (wood vinegar). This includes distillation, separation, purification, and chemical modification of these materials to produce commercially useful products such as binders, adhesives, or specialty chemicals. The subclass encompasses both thermal and chemical processing methods applied to these coal tar and petroleum residues. Closely related processes for producing these raw materials from coal tar distillation or petroleum refining are classified elsewhere within C10.
Title
Titles differ between systems:
IPC: WORKING-UP TAR, PITCH, ASPHALT, BITUMEN; PYROLIGNEOUS ACID
CPC: WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
Full Title
Full titles differ between systems:
WORKING-UP TAR, PITCH, ASPHALT, BITUMEN; PYROLIGNEOUS ACID
WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
Additional Content IPC
Glossary
Tar Tar is a black thermo-plastic material produced by the destructive distillation of coal – sometimes referred to as coal tar. Is also a residue in the manufacture of coal gas and coke. May also be derived from plants such as pine trees. Pitch Pitch is the name of a large number of highly viscous liquids which appear solid. Pitch may be made from petroleum or plant sources. Petroleum-derived pitch is also known as bitumen whereas plant-derived pitch is known as resin. Pitch derived from plant resin however is known as rosin. Tar and pitch are often used interchangeably. However, pitch is considered to be more solid whilst tar is considered to be more liquid. Asphalt Asphalt is a sticky, black and highly viscous liquid or semi-solid that is present in crude petroleum and in some natural deposits sometimes termed asphaltum. In US terminology asphalt (or asphalt cement) is the carefully refined residue from the distillation process of selected crude oils. Outside of the US, the product is called bitumen. Bitumen Bitumen is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulfide and composed primarily of highly condensed polycyclic aromatic hydrocarbons. Pyroligneous acid Pyroligneous acid, also called wood vinegar, is a dark liquid produced by the destructive distillation of wood. Its principal components are acetic acid and methanol. It was once used as a commercial source for acetic acid.
Limiting references
Obtaining hydrocarbon oils
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C10C 5/00 Production of pyroligneous acid (carbonisation of wood C10B) IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C10,2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 8,875
- SAUDI ARABIAN OIL COMPANY SA 2,245
- PETROCHINA COMPANY 2,028
- EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 1,980
- IFPEN (IFP ENERGIES NOUVELLES) FR 1,963
- SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 1,878
- CHINESE ACADEMY OF SCIENCES 1,829
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 1,787
- LUBRIZOL CORPORATION US 1,277
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,268
Top Applicants (CPC)
Class C10,2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,831
- SAUDI ARABIAN OIL COMPANY SA 2,918
- IFPEN (IFP ENERGIES NOUVELLES) FR 2,305
- EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 2,282
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,268
- SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 2,124
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,487
- CHEVRON CORPORATION US 1,400
- PETROCHINA COMPANY 1,372
- LUBRIZOL CORPORATION US 1,324