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Official data from INPI

COMPOSICAO FOTOPOLIMERIZAVEL E PROCESSO PARA PREPARACAO DE UM SAL COMPLEXO DE TRIARIL-SULFONIO PARA A MESMA

ConcedidaInvention Patent

Application data

Number

PI7900747

Type

Invention Patent

Filing

02/08/1978

Publication

-

Progress at the INPI

  1. Filing02/08/78
  2. Publication
  3. Examination10/13/81
  4. Allowance12/29/87
  5. Grant07/26/88
  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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

O. P. (pessoa física)

S. G. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

03/08/1983

RPI 646

Solicitação de exame técnico

#4.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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