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Official data from INPI

GRAXA LUBRIFICANTE

PublicadaInvention Patent

Application data

Number

PI8702093

Type

Invention Patent

Filing

04/29/1987

Publication

02/09/1988

Progress at the INPI

  1. Filing04/29/87
  2. Publication02/09/88
  3. Examination09/25/90
  4. Allowance12/03/91
  5. Grant09/29/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 02/09/1988. 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

H. M. (pessoa física)

JP

T. K. (pessoa física)

JP

Technical data

Priority claims

JP

61-98100 · 04/30/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/09/1988

RPI 903

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Carta-patente expirada

#21.1

Patente extinta em 29/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/29/1992

RPI 1139

Republicação - classificação IPC

#15.11

09/22/1992

RPI 1138

Notificação para pagamento de retribuição

#13.1

04/21/1992

RPI 1116

Deferimento

#9.1

12/03/1991

RPI 1096

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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