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Official data from INPI

PROCESSO E APARELHO PARA A PRODUCAO DE ADITIVO CONTENDO POLIMEROS LINEARES SINTETICOS

DeferidaInvention Patent

Application data

Number

PI7806440

Type

Invention Patent

Filing

09/30/1977

Publication

-

Progress at the INPI

  1. Filing09/30/77
  2. Publication
  3. Examination
  4. Allowance02/16/82
  5. Grant
  6. Expired05/03/94

The letters patent expired on 05/03/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 06/08/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. V. (pessoa física)

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Alteração de dados cadastrais

#1.1

06/08/1982

RPI 607

Deferimento

#9.1

02/16/1982

RPI 591

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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