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Official data from INPI

PROCESSO PARA A REMOÇÃO DE VAPOR DE TICL4 DE CORRENTES DE GASES

PublicadaInvention Patent

Application data

Number

PI8701372

Type

Invention Patent

Filing

03/26/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing03/26/87
  2. Publication12/22/87
  3. Examination06/12/90
  4. Allowance12/22/92
  5. Grant06/29/93
  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: 12/22/1987. 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

W. R. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8607696 · 03/27/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

07/07/1987

RPI 872

Carta-patente expirada

#21.1

Patente extinta em 26/03/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

04/27/1993

RPI 1169

Deferimento

#9.1

12/22/1992

RPI 1151

Exigência - art. 36 da LPI

#6.1

11/26/1991

RPI 1095

Solicitação de exame técnico

#4.1

06/12/1990

RPI 1022

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