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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM ÉSTER BENZÍLICO

ConcedidaInvention Patent

Application data

Number

PI7701218

Type

Invention Patent

Filing

02/28/1977

Publication

-

Progress at the INPI

  1. Filing02/28/77
  2. Publication
  3. Examination
  4. Allowance03/02/82
  5. Grant10/26/82
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 10/26/1982. 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

B. P. (pessoa física)

S. R. (pessoa física)

W. D. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/26/1982

RPI 627

Notificação para pagamento de retribuição

#13.1

06/22/1982

RPI 609

Deferimento

#9.1

03/02/1982

RPI 593

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 103/75; B01J 31/02; C07C 41/00; C07C 43/00; C07C 47/54; C07C 67/00; C07C 69/00; C07C 69/02; C07C 69/76; C07C 253/00; C07C 255/38; C07C 313/00; C07C 319/20; C07C 323/62; C07C 47/52; C07C 255/00; C07C 319/00; C07C 323/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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