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Official data from INPI

PROCESSO PARA EXTRAIR UM ÁCIDO PIRIDINO- OU QUINOLINO-DICARBOXÍLICO DE UM MEIO AQUOSO

ArquivadaInvention Patent

Application data

Number

PI9200831

Type

Invention Patent

Filing

03/11/1992

Publication

11/17/1992

Progress at the INPI

  1. Filing03/11/92
  2. Publication11/17/92
  3. Abandoned01/17/95
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/18/2000. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

R. Y. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/667,832 · 03/12/1991

US

07/829,397 · 02/07/1992

Abstract

A presente invenção fornece um processo para extrair ácidos piridino- ou quinolino-dicarboxílicos de meios aquosos. Os ácidos piridino- e quinolino-dicarboxílicos são utilizáveis na preparação dos compostos herbicidas nicotinato de 2-(2-imidazolin-2-ila) e 3-carboxilato de quinolina.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

04/18/2000

RPI 1528

Exigência - art. 36 da LPI

#6.1

09/08/1999

RPI 1496

Solicitação de exame técnico

#4.1

01/17/1995

RPI 1259

Publicação do pedido de patente

#3.1

11/17/1992

RPI 1146

Pedido de patente depositado

#2.1

04/21/1992

RPI 1116

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