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Official data from INPI

APERFEICOAMENTO EM SEGURADOR DE TRILHO

Em AnáliseInvention Patent
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Application data

Number

PI7707610

Type

Invention Patent

Filing

11/14/1977

Publication

-
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Progress at the INPI

  1. Filing11/14/77
  2. Publication
  3. Examination
  4. Allowance11/17/81
  5. Grant03/17/87
  6. Terminated12/15/87

The patent was granted on 03/17/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PORTEC INC

Inventors

Q. K. (pessoa física)

Technical data

IPC Classification

E01B 9/08

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

03/17/1987

RPI 856

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

03/23/1982

RPI 596

Deferimento

#9.1

11/17/1981

RPI 578

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