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Official data from INPI

SISTEMA DE PROTEÇÃO CONTRA SOBRECARGA DE REAJUSTE REMOTO

PublicadaInvention Patent

Application data

Number

PI8900729

Type

Invention Patent

Filing

02/20/1989

Publication

11/21/1989

Progress at the INPI

  1. Filing02/20/89
  2. Publication11/21/89
  3. Examination11/12/91
  4. Allowance01/03/95
  5. Grant06/27/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 11/21/1989. 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

L. S. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8804035 · 02/22/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/21/1989

RPI 996

Pedido de patente depositado

#2.1

04/04/1989

RPI 963

Carta-patente expirada

#21.1

Patente extinta em 20/02/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

06/27/1995

RPI 1282

Deferimento

#9.1

01/03/1995

RPI 1257

Exigência - art. 36 da LPI

#6.1

08/30/1994

RPI 1239

Solicitação de exame técnico

#4.1

11/12/1991

RPI 1093

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