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Official data from INPI

COMPOSICAO FOTOLIMERIZAVEL;SUBSTRATO QUE A CONTEM;E OLIGOMERO POLIMERIZAVEL

ConcedidaInvention Patent

Application data

Number

PI7902646

Type

Invention Patent

Filing

05/01/1978

Publication

-

Progress at the INPI

  1. Filing05/01/78
  2. Publication
  3. Examination01/26/82
  4. Allowance05/22/84
  5. Grant11/27/84
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

R. A. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/22/1984

RPI 709

Exigência - art. 36 da LPI

#6.1

12/06/1983

RPI 685

Solicitação de exame técnico

#4.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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