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Official data from INPI

APARELHO CONTROLADO PARA COMPUTADOR PARA PREPARAÇÃO DE POLIETILENO TEREF-TALATO.

Em AnáliseInvention Patent

Application data

Number

PI7800659

Type

Invention Patent

Filing

01/30/1978

Publication

-

Progress at the INPI

  1. Filing01/30/78
  2. Publication
  3. Examination
  4. Allowance
  5. Grant08/31/82
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

Inventors

K. R. (pessoa física)

M. A. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

P: 764.795 · 02/02/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

06/30/1987

RPI 871

18.8

03/17/1987

RPI 856

Anuidade - prazo legal encerrado

#18.2

01/13/1987

RPI 847

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

01/12/1982

RPI 586

15.0

11/03/1981

RPI 576

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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