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Official data from INPI

APERFEICOAMENTOS EM VENEZIANAS DE PALHETAS GRADUAVEIS

Em AnáliseInvention Patent
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Application data

Number

PI7508320

Type

Invention Patent

Filing

12/16/1975

Publication

-
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Progress at the INPI

  1. Filing12/16/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired10/26/93

The letters patent expired on 10/26/1993: 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: 11/01/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IND CO SASAZAKI LTD

Inventors

S. Y. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/01/1983

RPI 680

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

20.4

10/16/1990

RPI 1037

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