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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE DERIVADO DE 4-HIDROXICUMARINA

Em AnáliseInvention Patent

Application data

Number

PI8504673

Type

Invention Patent

Filing

09/24/1985

Publication

07/15/1986

Progress at the INPI

  1. Filing09/24/85
  2. Publication07/15/86
  3. Examination06/21/88
  4. Allowance01/22/91
  5. Grant08/27/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 06/21/1988. 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

I. B. (pessoa física)

Technical data

Priority claims

GB

8424317 · 09/26/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/21/1988

RPI 922

Publicação do pedido de patente

#3.1

07/15/1986

RPI 821

Pedido de patente depositado

#2.1

12/03/1985

RPI 789

Carta-patente expirada

#21.1

Patente extinta em 24/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

08/27/1991

RPI 1082

Republicação - classificação IPC

#15.11

07/16/1991

RPI 1076

Notificação para pagamento de retribuição

#13.1

05/14/1991

RPI 1067

Deferimento

#9.1

01/22/1991

RPI 1051

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