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Official data from INPI

PREPARAÇÃO DE ÉSTERES DE ALFA-CIANO-BENZILA

Concessão AnuladaInvention Patent

Application data

Number

PI7806364

Type

Invention Patent

Filing

09/26/1978

Publication

-

Progress at the INPI

  1. Filing09/26/78
  2. Publication
  3. Examination
  4. Allowance11/08/83
  5. Grant04/24/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 07/24/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

A. R. (pessoa física)

NL

R. S. (pessoa física)

NL

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

07/24/1984

RPI 718

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

02/28/1984

RPI 697

Deferimento

#9.1

11/08/1983

RPI 681

Exigência - art. 36 da LPI

#6.1

04/12/1983

RPI 651

6.2

11/10/1981

RPI 577

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 121/75; C07C 120/00; C07C 253/00; C07C 255/38; C07C 313/00; C07C 319/20; C07C 323/62; C07C 255/00; C07C 319/00; C07C 323/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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