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Official data from INPI

COMPOSIÇÃO DE ORGANO SILANA POLIMERA EATABILIZADA.

ConcedidaInvention Patent

Application data

Number

PI7904466

Type

Invention Patent

Filing

07/13/1979

Publication

-

Progress at the INPI

  1. Filing07/13/79
  2. Publication
  3. Examination
  4. Allowance08/04/87
  5. Grant02/23/88
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 02/23/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

K. J. (pessoa física)

M. N. (pessoa física)

W. R. (pessoa física)

Technical data

Priority claims

US

925.844 · 07/18/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

11/24/1987

RPI 892

Deferimento

#9.1

08/04/1987

RPI 876

Exigência - art. 36 da LPI

#6.1

04/23/1985

RPI 757

Exigência - art. 36 da LPI

#6.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

6.2

04/06/1982

RPI 598

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

18.8

05/26/1992

RPI 1121

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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