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Official data from INPI

APARELHO PARA CORRIGIR IRREGULARIDADES EM OU ALARGAR UM DUTO SUBTERRÂNEO

Arquivada/ExtintaInvention PatentPCT · GB1987000335

Application data

Number

PI8707313

Type

Invention Patent

Filing

05/15/1987

Publication

09/13/1988

PCT

GB1987000335

Progress at the INPI

  1. Filing05/15/87
  2. Publication09/13/88
  3. Examination02/01/90
  4. Allowance05/12/92
  5. Grant01/26/93
  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: 09/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Clearline Services Limited

GB

I.P.D Systems Limited

GB

Inventors

I. Y. (pessoa física)

GB

Technical data

Priority claims

GB

8612654 · 05/23/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

09/13/1988

RPI 934

Carta-patente expirada

#21.1

Patente extinta em 15/05/2002

07/29/2008

RPI 1960

Pedido de licença compulsória

#20.1

03/19/1996

RPI 1320

Concessão da patente

#16.1

01/26/1993

RPI 1156

Notificação para pagamento de retribuição

#13.1

10/06/1992

RPI 1140

Deferimento

#9.1

05/12/1992

RPI 1119

Exigência - art. 36 da LPI

#6.1

09/17/1991

RPI 1085

Solicitação de exame técnico

#4.1

02/01/1990

RPI 1004

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