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Official data from INPI

PANO DE TIRA TECIDA DE POLIOLEFINA E PROCESSO PARA PRODUZIR O MESMO

Em AnáliseInvention Patent

Application data

Number

PI7500534

Type

Invention Patent

Filing

01/31/1974

Publication

-

Progress at the INPI

  1. Filing01/31/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant04/27/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: 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: 09/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STANDARD OIL CO

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Inventors

B. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

09/01/1987

RPI 880

Concessão da patente

#16.1

04/27/1982

RPI 601

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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