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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE 3-FORMIL-2, 2-DIMETIL-CICLO-PROPANO-CARBALDEÍDO-DIMETIL ACETÚTIL COMO INTERMEDIÁRIO NA PREPARAÇÃO DE ÉSTERES DE CICLO-PROPIL-CARBOXILATOS

Concessão AnuladaInvention Patent

Application data

Number

PI7808223

Type

Invention Patent

Filing

12/14/1978

Publication

-

Progress at the INPI

  1. Filing12/14/78
  2. Publication
  3. Examination
  4. Allowance10/26/82
  5. Grant05/31/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

H. K. (pessoa física)

NL

J. B. (pessoa física)

NL

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

09/27/1983

RPI 675

16.3

07/26/1983

RPI 666

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

03/15/1983

RPI 647

Deferimento

#9.1

10/26/1982

RPI 627

6.2

04/06/1982

RPI 598

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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