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Official data from INPI

PROCESSO PARA CONTROLE DA CONCENTRAÇÃO DE PRODUTOS DE CONDENSAÇÃO ALDEÍDO FORMADOS DURANTE A PRODUÇÃO DE ALDEÍDO CATALISADO POR RÓDIO

ConcedidaInvention Patent

Application data

Number

PI7705303

Type

Invention Patent

Filing

08/11/1977

Publication

-

Progress at the INPI

  1. Filing08/11/77
  2. Publication
  3. Examination
  4. Allowance08/17/82
  5. Grant02/22/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

D. B. (pessoa física)

US

Technical data

Priority claims

US

713.680 · 08/12/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/28/1982

RPI 636

Deferimento

#9.1

08/17/1982

RPI 617

Exigência - art. 36 da LPI

#6.1

01/05/1982

RPI 585

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

20.4

08/07/1990

RPI 1027

20.7

07/31/1990

RPI 1026

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