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Official data from INPI

PROCESSO DE GRAVACAO UTILIZANDO A MESMA CAMADA DE RESINA FOTOS-SENSIVEL POSITIVA PARA DUAS ETAPAS DE GRAVACAO

Em AnáliseInvention Patent

Application data

Number

PI7704380

Type

Invention Patent

Filing

06/30/1976

Publication

-

Progress at the INPI

  1. Filing06/30/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

P. M. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

11/26/1985

RPI 788

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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