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Official data from INPI

COMPOSTO DE TRIALOMETILIDROXILACTONAS E UM PROCESSO PARA SUA PREPARAÇÃO

ConcedidaInvention Patent

Application data

Number

PI8103314

Type

Invention Patent

Filing

05/27/1981

Publication

02/16/1982

Progress at the INPI

  1. Filing05/27/81
  2. Publication02/16/82
  3. Examination02/14/84
  4. Allowance07/09/85
  5. Grant12/31/85
  6. Expired10/08/96

The letters patent expired on 10/08/1996: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappig B.V.

NL

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Inventors

K. P. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8017698 · 05/30/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

02/14/1984

RPI 695

Publicação do pedido de patente

#3.1

02/16/1982

RPI 591

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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