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Official data from INPI

UM PROCESSO PARA A HIDRÓLISE DE RESINAS EPÓXI NA AUSÊNCIA DE UM FENOL POLIIDRICO E UM SOLVENTE ORGÂNICO E NA PRESENÇA DE ÁCIDO DICARBOXILICO E UM COMPOSTO DE FOSFÔNIO

ConcedidaInvention Patent

Application data

Number

PI8307484

Type

Invention Patent

Filing

08/04/1983

Publication

08/14/1984

Progress at the INPI

  1. Filing08/04/83
  2. Publication08/14/84
  3. Examination05/13/86
  4. Allowance01/03/89
  5. Grant09/26/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

C. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

408.348 · 08/16/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

05/16/1989

RPI 969

Deferimento

#9.1

01/03/1989

RPI 950

Exigência - art. 36 da LPI

#6.1

06/21/1988

RPI 922

Solicitação de exame técnico

#4.1

05/13/1986

RPI 812

Notificação de entrada na fase nacional - PCT

#1.3

08/14/1984

RPI 721

Carta-patente expirada

#21.1

Patente extinta em 04/08/98

07/01/2008

RPI 1956

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