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Official data from INPI

TRATORES PARA USO EM TÚNEIS

ConcedidaInvention Patent

Application data

Number

PI8305131

Type

Invention Patent

Filing

09/20/1983

Publication

05/08/1984

Progress at the INPI

  1. Filing09/20/83
  2. Publication05/08/84
  3. Examination06/11/85
  4. Allowance11/01/88
  5. Grant08/29/89
  6. Terminated02/18/92

The patent was granted on 08/29/1989 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Mining Union Corporation Limited

ZA

See this company's full portfolio

Inventors

D. L. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

ZA

82/6879 · 09/20/1982

ZA

82/6880 · 09/20/1982

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

02/21/1989

RPI 957

Deferimento

#9.1

11/01/1988

RPI 941

Exigência - art. 36 da LPI

#6.1

12/22/1987

RPI 896

Solicitação de exame técnico

#4.1

06/11/1985

RPI 764

Publicação do pedido de patente

#3.1

05/08/1984

RPI 707

Pedido de patente depositado

#2.1

11/22/1983

RPI 683

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: E02F 3/30; E02F 3/74.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

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