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Official data from INPI

PROCESSO DE FORMAR ENCHIMENTO EM UM ESPAÇO VAZIO SUBTERRÂNEO

Prazo de SigiloInvention Patent

Application data

Number

PI8903446

Type

Invention Patent

Filing

07/13/1989

Publication

03/06/1990

Progress at the INPI

  1. Filing07/13/89
  2. Publication03/06/90
  3. Examination03/24/92
  4. Allowance04/09/96
  5. Grant09/30/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Fosroc International Limited

GB

See this company's full portfolio

Inventors

R. S. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

88.23017.2 · 09/30/1988

ZA

88.5086 · 07/14/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

10/10/1989

RPI 990

Carta-patente expirada

#21.1

Patente extinta em 13/07/2009

05/21/2013

RPI 2211

Concessão da patente

#16.1

09/30/1997

RPI 1400

Republicação - classificação IPC

#15.11

02/25/1997

RPI 1369

Notificação para pagamento de retribuição

#13.1

02/04/1997

RPI 1366

Deferimento

#9.1

04/09/1996

RPI 1323

Exigência - art. 36 da LPI

#6.1

02/07/1995

RPI 1262

Solicitação de exame técnico

#4.1

03/24/1992

RPI 1112

Publicação do pedido de patente

#3.1

03/06/1990

RPI 1008

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