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Official data from INPI

COMPOSICOES A BASE DE POLIMEROS OU DE COPOLIMEROS DE CLORETO DE VINILA

Em AnáliseInvention Patent

Application data

Number

PI7600085

Type

Invention Patent

Filing

01/10/1975

Publication

-

Progress at the INPI

  1. Filing01/10/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant12/29/81
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 05/02/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. I. (pessoa física)

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Inventors

C. M. (pessoa física)

G. M. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

05/02/1984

RPI 706

Concessão da patente

#16.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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