Current Classes in the USPCS: Dates Established

Patents > Office of Patent Classification > Classes in the USPCS: Dates Established > Current Classes

Current Classes in the USPCS:

Dates Established

Class	Date Established
G9B	2008
Plants 1, 2	1963
2	1923
4	1923
5	1922
7	1899
8	1938
12	1901
14	1907
15	1921
16	1899
19	1922
23	1924
24	1904
26	1924
27	1919
28	1922
29	1904
30	1937
33	1913
34	1941
36	1900
37	1922
38	1936
40	1901
42	1902
43	1920
44	1920
47	1923
48	1903
49	1966

Class	Date Established
51	1920
52	1965
53	1951
54	1901
55	1962
56	1919
57	1939
59	1907
60	1918
62	1958
63	1908
65	1962
66	1926
68	1937
69	1900
70	1936
71	1908
72	1965
73	1944
74	1934
75	1936
76	1904
79	1904
81	1901
82	1900
83	1959
84	1920
86	1901
87	1942
89	1901

Class	Date Established
91	1963
92	1963
95	1993
96	1993
99	1935
100	1952
101	1916
102	1902
104	1918
105	1918
106	1899
108	1963
109	1938
110	1906
111	1917
112	1919
114	1905
116	1919
117	1994
118	1952
119	1910
122	1911
123	1905
124	1937
125	1918
126	1907
127	1923
128	1919
131	1939

Class	Date Established
132	1920
134	1943
135	1901
136	1925
137	1952
138	1935
139	1923
140	1910
141	1956
142	1899
144	1900
147	1899
148	1918
149	1961
150	1906
152	1939
156	1961
157	1899
159	1923
160	1942
162	1959
163	1902
164	1967
165	1962
166	1954
168	1906
169	1919
171	1957
172	1958
173	1963

Class	Date Established
174	1938
175	1960
177	1961
178	1913
180	1917
181	1900
182	1959
184	1907
185	1911
186	1909
187	1910
188	1920
190	1902
191	1912
192	1920
193	1922
194	1900
196	1924
198	1976
199	1916
200	1919
201	1965
202	1928
203	1965
204	1940
205	1991
206	1906
208	1958
209	1925
210	1957

Class	Date Established
211	1927
212	1912
213	1922
215	1920
216	1995
217	1901
218	1995
219	1904
220	1919
221	1954
222	1944
223	1935
224	1902
225	1959
226	1960
227	1965
228	1965
229	1899
231	1901
232	1902
234	1960
235	1901
236	1919
237	1914
238	1919
239	1959
241	1944
242	1910
244	1936
245	1910

Class	Date Established
246	1918
248	1935
249	1965
250	1912
251	1954
252	1940
254	1914
256	1913
257	1992
258	1913
260	1938
261	1916
264	1963
266	1915
267	1919
269	1961
270	1916
271	1916
273	1924
276	1916
277	1962
278	1920
279	1918
280	1919
281	1918
283	1918
285	1956
289	1918
290	1918
291	1918

Class	Date Established
292	1919
293	1918
294	1919
295	1918
296	1919
297	1961
298	1919
299	1964
300	1921
301	1920
303	1920
305	1959
307	1952
310	1952
312	1927
313	1950
314	1941
315	1943
318	1947

Current Classes in the USPCS:

Dates Established

Class	Date Established
320	1943
322	1947
323	1947
324	1953
326	1994
327	1994
329	1960
330	1959
331	1959
332	1948
333	1953
334	1961
335	1966
336	1952
337	1968
338	1959
340	1910
341	1988
342	1986
343	1947
345	1993
346	1947
347	1994
348	1994
349	1996
351	1964
352	1964
353	1968
355	1968

Date	Established
356	1968
358	1974
359	1991
360	1973
361	1977
362	1977
363	1977
364	1977
365	1978
366	1977
367	1979
368	1980
369	1981
370	1980
372	1982
373	1982
374	1982
375	1980
376	1981
377	1983
378	1982
379	1986
380	1987
381	1983
382	1983
383	1983
384	1982
385	1991
386	1996

Class	Date Established
388	1989
389	1990
392	1990
395	1991
396	1996
398	2003
399	1996
400	1978
401	1967
402	1969
403	1973
404	1972
405	1978
406	1979
407	1977
408	1971
409	1979
410	1979
411	1981
412	1982
413	1982
414	1979
415	1969
416	1969
417	1970
418	1970
419	1982
420	1982
422	1978
423	1972
424	1968
425	1971
426	1973

Class	Date Established
427	1975
428	1975
429	1976
430	1979
431	1968
432	1972
433	1979
434	1980
435	1979
436	1982
438	1997
439	1987
440	1980
441	1982
442	1997
445	1983
446	1984
449	1988
450	1987
451	1994
452	1990
453	1987
454	1991
455	1980
460	1989
462	1991
463	1996
464	1982
470	1992
472	1992
473	1993

Class	Date Established
474	1980
475	1990
476	1993
477	1994
482	1992
483	1992
492	1993
493	1980
494	1982
501	1981
502	1983
503	1987
504	1993
505	1988
506	2007
507	1991
508	1996
510	1996
512	1987
514	1985
516	1998
518	1981
520	1982
521	1978
522	1986
523	1982
524	1982
525	1979
526	1976
527	1982
528	1976
530	1984
532	1984

Class	Date Established
534	1984
536	1976
540	1986
544	1977
546	1978
548	1977
549	1979
552	1989
554	1992
556	1980
558	1986
560	1977
562	1978
564	1980
568	1978
570	1980
585	1979
588	1992
600	1988
601	1994
602	1992
604	1982
606	1989
607	1993
623	1985
700	1999
701	1997
702	1998
703	2000
704	1997
705	1997
706	1998
707	1997
708	1999
709	1999
710	1999
711	1997
712	1999
713	1999
714	1999
715	2002
716	2000
717	2000
718	2003
719	2003
720	2004
725	2000
726	2005
800	1986
850	2009
901	1984
902	1988
903	2005
930	1990
968	1992
976	1991
977	2004
984	1992
987	1993

Class	Date Established
D1	1967
D2	1967
D3	1979
D4	1967
D5	1986
D6	1972
D7	1973
D8	1969
D9	1967
D10	1973
D11	1976
D12	1973
D13	1976
D14	1976
D15	1976
D16	1976
D17	1979
D18	1979
D19	1974
D20	1979
D21	1979
D22	1967
D23	1967
D24	1976
D25	1976
D26	1980
D27	1975
D28	1976
D29	1976
D30	1967
D32	1981
D34	1981
D99	1967

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