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Official data from INPI

CARTUCHO DE DUAS CAMARAS E PROCESSO PARA A FIXACAO DE BARRAS DE ANCORAMENTO EM PERFURACOES

ConcedidaInvention Patent

Application data

Number

PI7800817

Type

Invention Patent

Filing

02/11/1977

Publication

-

Progress at the INPI

  1. Filing02/11/77
  2. Publication
  3. Examination
  4. Allowance10/13/82
  5. Grant05/31/83
  6. Terminated09/18/90

The patent was granted on 05/31/1983 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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BAYER AG

BERGWERKSVERBAND GMBH

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Inventors

K. R. (pessoa física)

M. F. (pessoa física)

W. M. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

02/16/1983

RPI 643

Republicação - classificação IPC

#15.11

02/08/1983

RPI 642

Deferimento

#9.1

10/13/1982

RPI 625

Exigência - art. 36 da LPI

#6.1

04/20/1982

RPI 600

6.2

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

09/18/1990

RPI 1033

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