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Official data from INPI

APARELHO ELETROFOTOGRAFICO,PROCESSO E APARELHO PARA GERAR IONS,APARELHO DE IMPRESSAO ELETROSTATICA E PROCESSO PARA IMPREGNAR UM MEMBRO CONDUTOR ANODIZADO

ConcedidaInvention Patent

Application data

Number

PI7807037

Type

Invention Patent

Filing

09/05/1978

Publication

-

Progress at the INPI

  1. Filing09/05/78
  2. Publication
  3. Examination
  4. Allowance04/12/83
  5. Grant10/25/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 10/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DENNISON MFG CO

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Inventors

C. J. (pessoa física)

F. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

08/30/1983

RPI 671

Deferimento

#9.1

04/12/1983

RPI 651

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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