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Official data from INPI

DISPOSITIVO DE ARRASTO DE UMA CALHA OSCILANTE

ConcedidaInvention Patent

Application data

Number

PI8303512

Type

Invention Patent

Filing

06/24/1983

Publication

02/07/1984

Progress at the INPI

  1. Filing06/24/83
  2. Publication02/07/84
  3. Examination06/17/86
  4. Allowance11/16/88
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Paul Wurth S.A.

LU

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Inventors

E. L. (pessoa física)

LU

E. L. (pessoa física)

LU

Technical data

IPC Classification

Priority claims

LU

84.224 · 06/24/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

03/07/1989

RPI 959

Republicação - classificação IPC

#15.11

11/22/1988

RPI 944

Deferimento

#9.1

11/16/1988

RPI 943

6.2

02/24/1987

RPI 853

Solicitação de exame técnico

#4.1

06/17/1986

RPI 817

Publicação do pedido de patente

#3.1

02/07/1984

RPI 694

Pedido de patente depositado

#2.1

08/09/1983

RPI 668

Carta-patente expirada

#21.1

Patente extinta em 24/06/98

07/01/2008

RPI 1956

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