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Official data from INPI

TUBO CORRUGADO.

ConcedidaInvention Patent

Application data

Number

PI8207416

Type

Invention Patent

Filing

12/21/1982

Publication

10/18/1983

Progress at the INPI

  1. Filing12/21/82
  2. Publication10/18/83
  3. Examination08/06/85
  4. Allowance03/17/87
  5. Grant08/25/87
  6. Terminated04/11/95

The patent was granted on 08/25/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Gustav Wahler GMBH u. Co.

Inventors

W. [. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

G 81 37 649.9 · 12/23/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

03/17/1987

RPI 856

Solicitação de exame técnico

#4.1

08/06/1985

RPI 772

Publicação do pedido de patente

#3.1

10/18/1983

RPI 678

Pedido de patente depositado

#2.1

02/16/1983

RPI 643

Anuidade - prazo legal encerrado

#18.2

04/11/1995

RPI 1271

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