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Official data from INPI

CATALISADOR E PROCESSOS PARA OXIDAR E PREPARAR COMPOSTOS DE MERCAPTANAS E MERCAPTIDAS

ConcedidaInvention Patent

Application data

Number

PI7708570

Type

Invention Patent

Filing

12/22/1977

Publication

-

Progress at the INPI

  1. Filing12/22/77
  2. Publication
  3. Examination
  4. Allowance08/30/83
  5. Grant03/27/84
  6. Expired08/19/08

The letters patent expired on 08/19/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ASHLAND OIL, INC

US

See this company's full portfolio

Inventors

C. W. (pessoa física)

US

Technical data

Priority claims

US

753.400 · 12/22/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

12/20/1983

RPI 687

Deferimento

#9.1

08/30/1983

RPI 671

Exigência - art. 36 da LPI

#6.1

12/28/1982

RPI 636

15.0

03/16/1982

RPI 595

Exigência - art. 36 da LPI

#6.1

02/09/1982

RPI 590

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01J 31/12; C07B 3/00; C07B 61/00; C07C 67/00; C07C 313/00; C07C 319/24; C07C 321/14; C07C 321/28; C07D 487/22; C07F 9/00; C07F 15/06; C09B 47/04; C09B 47/06; C10G 27/06; C10G 45/04; H01B 5/16; C07C 319/00; C07C 321/00; C07D 487/00; C07F 15/00; C10G 45/02.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 22/12/92

08/19/2008

RPI 1963

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