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Official data from INPI

AGENTES RETARDADORES DE CHAMA E COMPOSICOES POLIMERICAS CONTENDO OS MESMOS

Concessão AnuladaInvention Patent

Application data

Number

PI7800493

Type

Invention Patent

Filing

01/28/1977

Publication

-

Progress at the INPI

  1. Filing01/28/77
  2. Publication
  3. Examination
  4. Allowance09/27/83
  5. Grant03/27/84
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 06/19/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M & T CHEMICALS INC

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Inventors

L. W. (pessoa física)

T. I. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

06/19/1984

RPI 713

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/17/1984

RPI 691

Deferimento

#9.1

09/27/1983

RPI 675

Exigência - art. 36 da LPI

#6.1

11/03/1982

RPI 628

Exigência - art. 36 da LPI

#6.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

20.4

10/15/1991

RPI 1089

Pedido de licença compulsória

#20.1

10/08/1991

RPI 1088

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