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Official data from INPI

PROCESSO PARA A FABRICAÇÃO CONTÍNUA DE UMA GRAXA LUBRIFICANTE

Em AnáliseInvention Patent

Application data

Number

PI8500001

Type

Invention Patent

Filing

01/02/1985

Publication

08/13/1985

Progress at the INPI

  1. Filing01/02/85
  2. Publication08/13/85
  3. Examination07/14/87
  4. Allowance06/12/90
  5. Grant12/26/90
  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: 07/14/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

N. R. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8400073 · 01/04/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/14/1987

RPI 873

Publicação do pedido de patente

#3.1

08/13/1985

RPI 773

Pedido de patente depositado

#2.1

04/02/1985

RPI 754

Carta-patente expirada

#21.1

Patente extinta em 02/01/2000

07/15/2008

RPI 1958

Republicação - classificação IPC

#15.11

05/14/1991

RPI 1067

Concessão da patente

#16.1

12/26/1990

RPI 1047

Notificação para pagamento de retribuição

#13.1

09/25/1990

RPI 1034

Deferimento

#9.1

06/12/1990

RPI 1022

Exigência - art. 36 da LPI

#6.1

01/16/1990

RPI 1002

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