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Official data from INPI

PROCESSO DE TRATAMENTO EM COBERTURA MORTA DE SOLO

Em AnáliseInvention Patent

Application data

Number

PI8505444

Type

Invention Patent

Filing

10/31/1985

Publication

06/02/1987

Progress at the INPI

  1. Filing10/31/85
  2. Publication06/02/87
  3. Examination10/10/89
  4. Allowance10/29/91
  5. Grant08/25/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. R. (pessoa física)

RS, BR

Inventors

N. R. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/10/1989

RPI 990

Publicação do pedido de patente

#3.1

06/02/1987

RPI 867

Pedido de patente depositado

#2.1

01/14/1986

RPI 795

Carta-patente expirada

#21.1

Patente extinta em 31/10/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

08/25/1992

RPI 1134

Notificação para pagamento de retribuição

#13.1

03/10/1992

RPI 1110

Deferimento

#9.1

10/29/1991

RPI 1091

Exigência - art. 36 da LPI

#6.1

06/18/1991

RPI 1072

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