Difference between revisions of "Patent classification systems"
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(add Swiss & Austrian ; alphabetize national systems in their own section) |
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* the [[IPC]] is the predecessor to the CPC, started 1971, per Wang (2018) | * the [[IPC]] is the predecessor to the CPC, started 1971, per Wang (2018) | ||
* IPC1-7 - an IPC version or variant | * IPC1-7 - an IPC version or variant | ||
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* [[NBER patent classification]] - a grouping of the USPC system into larger simpler clusters, used in economics research especially | * [[NBER patent classification]] - a grouping of the USPC system into larger simpler clusters, used in economics research especially | ||
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| − | * [[ | + | === National systems === |
| + | * [[Austrian patent classifications]] | ||
* [[Belgian patent classifications]] | * [[Belgian patent classifications]] | ||
* [[British patent classifications]] | * [[British patent classifications]] | ||
| + | * [[Canadian patent classifications]] -- seems to look a lot like the USPC but the history of it is not known yet ; it was used till circa 1989 | ||
| + | * [[French patent classifications]] -- dated in 50-year gropus from about 1858 to 1904 then from 1904 to 1958 | ||
| + | * [[German patent classifications]] -- starting 1878 or thereabouts | ||
| + | * [[Swiss patent classifications]] | ||
| + | * [[USPC]] -- US standards used officlally till at least 2013, start date uncertain | ||
{{Techtype | {{Techtype | ||
|Enclosing categories=Techtype | |Enclosing categories=Techtype | ||
| − | |Subcategories=CPC; IPC; IPC1-7; French patent classifications; USPC; German patent classifications; Canadian patent classifications; NBER patent classification; Belgian patent classifications; British patent classifications | + | |Subcategories=CPC; IPC; IPC1-7; French patent classifications; USPC; German patent classifications; Canadian patent classifications; NBER patent classification; Belgian patent classifications; British patent classifications; Swiss patent classifications; Austrian patent classifications |
}} | }} | ||
Revision as of 08:00, 18 May 2019
There have been many patent classification systems, and any that helpfully classify aero patents in our period are relevant to include here.
- the CPC category system is the most modern and global, started 2010
- the IPC is the predecessor to the CPC, started 1971, per Wang (2018)
- IPC1-7 - an IPC version or variant
- NBER patent classification - a grouping of the USPC system into larger simpler clusters, used in economics research especially
National systems
- Austrian patent classifications
- Belgian patent classifications
- British patent classifications
- Canadian patent classifications -- seems to look a lot like the USPC but the history of it is not known yet ; it was used till circa 1989
- French patent classifications -- dated in 50-year gropus from about 1858 to 1904 then from 1904 to 1958
- German patent classifications -- starting 1878 or thereabouts
- Swiss patent classifications
- USPC -- US standards used officlally till at least 2013, start date uncertain
| Enclosing categories | Techtype |
|---|---|
| Subcategories | CPC, IPC, IPC1-7, French patent classifications, USPC, German patent classifications, Canadian patent classifications, NBER patent classification, Belgian patent classifications, British patent classifications, Swiss patent classifications, Austrian patent classifications |
| Keywords | |
| Start year | |
| End year |
